{
  "manageEntity": {
    "action": "Save",
    "entityId": "282306",
    "entityType": "Track",
    "nonce": "0x072680bdb2c665d3f0b09280617390ac18a27860d136642509c88b8dc2cae93e",
    "signature": "0x4cfe9705c72abb4a546c90fa6c9118f3f6459292660fd6d58ad2a01cc3e01e8b495c7eadc98eae2fb401e69a89fb625b835132e9ebdf921165bb528f1f1ce2ce1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}