{
  "manageEntity": {
    "action": "Save",
    "entityId": "1740339868",
    "entityType": "Track",
    "nonce": "0x322c14d0f4eb6182a38c24585799aac007e779fd8ef7c92db7cff138e83a54cf",
    "signature": "0x7bc37d48972b10c16f3e21a9aa41f31734c64f3fc45ce85cd9e2de3989f17e0962460228540097fced15b814bd9e469ffeab9c11cdedc73db9ca52a516d7ab111c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}