{
  "manageEntity": {
    "action": "Save",
    "entityId": "1034515007",
    "entityType": "Track",
    "nonce": "0x565d343edbfa1c56e3ffed524a878281833b80e54fa15602cf13f1620faf9f99",
    "signature": "0x77e3be793837c5d95476de4a81b7d90380edbf985d852753346ffc026d7c4c68587f985b580e7faef25db5775e0d06fc10c6f5022e9556c9823e7b95142319b71c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}