{
  "manageEntity": {
    "action": "Save",
    "entityId": "28692787",
    "entityType": "Track",
    "nonce": "0xa3b763013474dba835eff3c674e383b82fe905609d3f78f9d7228c03b4ce08c9",
    "signature": "0x9256ed2da52bfe086a17f5b0a6dc2e78aab60ef4b9429612d9268381768238b52abde6a5dfafa7cee470d31c0ca7b521964a6986219707df87311186a1bf2a981c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}