{
  "manageEntity": {
    "action": "Save",
    "entityId": "610836132",
    "entityType": "Track",
    "nonce": "0x615d771243a8b12f98d969b383073643377a3bc543f0c7f43c68e8092506b01e",
    "signature": "0xbbd7e6716425dbacf4368a6b17a16b69ec0115856b21a832f055771afbf022b0295b842560d0e37e3ee173d5ca3c9fd32ea9c972ece90f15aae290df17b0809d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}