{
  "manageEntity": {
    "action": "Save",
    "entityId": "897716168",
    "entityType": "Track",
    "nonce": "0x3ffaef14c0c9e17bcb68d181a489a671b16ca9589d84e2bcbbd70c14afa0cd2f",
    "signature": "0x93a5659598fda8a69776d4b37138070255fd0c533ebbaec98250edf990468cf669564d3f394a234bb960597fb94a6786ae6c17f5b3e248ebdaaf3b9103b7a9c21b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}