{
  "manageEntity": {
    "action": "Save",
    "entityId": "1886097223",
    "entityType": "Track",
    "nonce": "0x72b567d029b01c6e180b51367d1e52f42d13cd53e8c3e6949150c0058da9bb5c",
    "signature": "0x4cb3208408aab14ef10a5631f2fa2d2bdea4091819b898977e148044a2ea0ee97cad181e79dc551dff266ef5ea5b8f7e8c0de9a69ff7a8ed606f46f38526da7d1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}