{
  "manageEntity": {
    "action": "Save",
    "entityId": "526392205",
    "entityType": "Track",
    "nonce": "0x85efff2e51bf3a391ff2b8252746de8bfe363cc77b90a3c5d97c95bd0e2f8823",
    "signature": "0x22014f63ab3ae613827e582b19531463675b8c98c9b7253b0e54192eaed6a81e6164d62e2cd02b3ffa73cef8f3ac2ee420cd4cfc1dcb31e9e6a2870154ba51601b",
    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}