{
  "manageEntity": {
    "action": "Save",
    "entityId": "324593",
    "entityType": "Track",
    "nonce": "0x43525cbcb0196d3ac5fb27ebf2c5a3feb7752de87d98a51a84806732367afed1",
    "signature": "0x6a68b4e63bf08ce6201298ba2682b89ba9c73eac745018453039276a17ca49af76d1b16fc5c44363cdfd35fc31f2733bd83963447f681b83f338150076ceaff11b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}