{
  "manageEntity": {
    "action": "Save",
    "entityId": "1383117240",
    "entityType": "Track",
    "nonce": "0x0d64b0618c2eaaa3f0b27f2bd9be9f86ba97bc378dd0e9bee522aa9253b08605",
    "signature": "0xa86e3b0f5148e7f1f90591d583724c5f6f073d36addc76fd24221983ab80400f4deddef0204bd8d547439625a73fde364bf531d2ad4f25de468eea817f11154b1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}