{
  "manageEntity": {
    "action": "Save",
    "entityId": "592414",
    "entityType": "Track",
    "nonce": "0x561a6995d87b3205f2167a63ac43a5932502e3aa80ec4437585ada106b7b87bf",
    "signature": "0x4ca9da446aa93f91b64bd8d9a7bf8263176b833961b5dbc40f943752c591a2b24246cffe1b247fac80af65f338df8205f51a2279e61ce5fde9633bdb11d257c31b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}