{
  "manageEntity": {
    "action": "Save",
    "entityId": "1820560485",
    "entityType": "Track",
    "nonce": "0xfd46ceacc3546008214e88adf9b7dd0fa99ac1387836245b39e6efe7168b1e32",
    "signature": "0x17604eed21c5728798f4ce6c4297de666c407f668c45870c99f99f059e8034ee28f0dd3acfa02eb12f12f8da31db3d632a2bf82b8d61ac1803bea1de3468fcb01c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}