curl --request POST \
  --url https://staging.crossmint.com/api/2022-06-09/collections/{collectionId}/nfts/ \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '{
  "nfts": [
    {
      "recipient": "email:testy@crossmint.com:polygon",
      "metadata": {
        "name": "Crossmint Example NFT",
        "image": "https://www.crossmint.com/assets/crossmint/logo.png",
        "description": "My NFT created via the mint API!",
        "animation_url": "",
        "attributes": [
          {
            "display_type": "boost_number",
            "trait_type": "<string>",
            "value": "<string>"
          }
        ]
      },
      "compressed": true,
      "id": "<string>"
    }
  ]
}'

{
  "results": [
    {
      "id": "<string>",
      "onChain": {
        "status": "<string>",
        "chain": "<string>",
        "contractAddress": "<string>",
        "subscription": {
          "expiresAt": "2023-11-07T05:31:56Z"
        }
      },
      "actionId": "<string>"
    }
  ]
}