{
  "manageEntity": {
    "action": "Save",
    "entityId": "1651640382",
    "entityType": "Track",
    "nonce": "0xdce3fdff7428be1afd327563545c57ee00e038c292a6ff576d15ba64f75cbedd",
    "signature": "0xca18c21cb493e5b8e116cfc898218a2b39734e37ad295f45a32b35aaa121f8590165d80219a22bc6dc534937a1df1f5053a52891c09d5c9b581677d960088d0a1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}