{
  "manageEntity": {
    "action": "Save",
    "entityId": "1885838095",
    "entityType": "Track",
    "nonce": "0xa0714d8b0c06e4d03994ff1913e56ad53c28e8cbe5567acb7ed3b31c15a0ccd1",
    "signature": "0x4f3ab76f8372f0c4aef64ea5e2bef71f9312837d41456f2c79791acea0ed37b81d9bf7bf4e0a9198a3b942a4a86fd3258a04371488d0114fc100b2d98a8b136a1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}