{
  "manageEntity": {
    "action": "Save",
    "entityId": "1194761637",
    "entityType": "Track",
    "nonce": "0xde1267ef539b951a3cd1007ded214019585f6730ce53f95b08e42c058a63a95f",
    "signature": "0x55e73937da61c5743aaed47c64e18b18ba8a5922d7644b1b6f15d15e375e3f192f50d8a5a87e060122f4222303359c4ef60683d566a880e5840e0f8614bfb2251b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}