{
  "manageEntity": {
    "action": "Save",
    "entityId": "2075417834",
    "entityType": "Track",
    "nonce": "0x8668f2cc7187cceba7b4f5be038f0bd5ed9c8fef2a7d75575d15d6458a1910d3",
    "signature": "0x424f1b14f9a25c38fd0266061e11bee7546afa488c38a4bce2f75ddbcde35dbe794c33ec49b8220885ffd31af55bf4bbf44d246c5a4242f09ac9fb42556ee1151c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}