{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102138902",
    "entityType": "Track",
    "nonce": "0x2c09c325e66427c50333334e2f3715d857201ee4c697c0bb933f2fd716da43af",
    "signature": "0xc960863714f30e42a58db721b7035cee476b91c6b54b3858a7042a072a446ad7626f1bb25147e01a1e763ec885eb15cbd834e0a1c3c6bbcf02275e09ed2fb9fa1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}