{
  "manageEntity": {
    "action": "Save",
    "entityId": "985424047",
    "entityType": "Track",
    "nonce": "0x2e50b11c22bcffb6ccbbd6afd1dcfffec63b7b4e13e1fd7c385ed75b7e49c32b",
    "signature": "0xb659cc60f84a32b2989e0914b64151cad2e5ac318c52a0608d9ff37f5edd6340295bd048b3475d9cec84233da729d17afca4cf3cdb18bf6b681888dcf48452161b",
    "signer": "0x14d7618B82Da4e7176FDe32e4379943eCd69798D",
    "userId": "238125623"
  }
}