{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116779",
    "entityType": "Track",
    "nonce": "0x48839b843ab1c46f916938d39d5533239aee15839f41c1155b43d64f7c6a2c7f",
    "signature": "0xc6f60f0817fa88c913f364de860afedf847c46ad02a60451f31b2a5f3d528e9240e90802e5d8a1cd1047c8904abcbf6a397fd593034ba98c6d592b3143dc10e71c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}