{
  "manageEntity": {
    "action": "Save",
    "entityId": "88497",
    "entityType": "Track",
    "nonce": "0x7d529eefbca1ffddff20d3930858e8264b08ade0582e701f2eca1223f1da8ff7",
    "signature": "0x7882f922fc2c1097423b3b5d43378b9474b637a023a16080fee193dd42846eaa1efc774c5ad56a8b99be2b68302a7ab7a03f5cbb04e0adb8819554c928c20b121c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}