{
  "manageEntity": {
    "action": "Save",
    "entityId": "2085584437",
    "entityType": "Track",
    "nonce": "0x6d867250409063774ff668d440f483db254c4eacac652984da2cebf972ee93bb",
    "signature": "0x44983405f86b265c5038185ac8a32a3e7c7b42b4c1a9cbf33017a7e599e0194b581c9383cdc81328c76037ff80fa945cdb9ac9b543db2190b00f54a0db5d289e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}