{
  "manageEntity": {
    "action": "Save",
    "entityId": "965015095",
    "entityType": "Track",
    "nonce": "0x68e9408b7e9fe0916cc7e3d9364811a640bf626c544e6d5d8aaec18f68d3ef3d",
    "signature": "0xa230714e6a4e429833d47092f2455127c3bf38aae8ed322f3fcc8b834e495b1920aa26c9c1fd55f49541526367bf9bf8a9d63db680a153257221500727934af61b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}