{
  "manageEntity": {
    "action": "Save",
    "entityId": "1793547505",
    "entityType": "Track",
    "nonce": "0xaf325fb93045600f6b78c100cf3fc7e540b038a268abf8b1621748df6aaccc5e",
    "signature": "0xbed3a0f36f8b976b07f87f8e598494f7a189c68469b9b15506dbe954d98bd2db5fe4bdece1d2780e23a3cb02ec2b5b3de0b4fefbaed590b6172b2123afe1d8d21c",
    "signer": "0x697B9B9E4eD334E787D1C9b050bBd6A12bF84208",
    "userId": "20671471"
  }
}