{
  "manageEntity": {
    "action": "Save",
    "entityId": "1710341364",
    "entityType": "Track",
    "nonce": "0xbdb85c9a01eafecfa5a00c57db9e7dead6c46ed018aa6e1429f820ab26799234",
    "signature": "0x2c0fb7a5d51cb8bfaef3e9156507eb4463621f09ece6189236929e29ef656710579b87cdba3c83637c4e34592d6ce61fe5b5303a01b7e4b1c3f45dd59e69545b1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}