{
  "manageEntity": {
    "action": "Save",
    "entityId": "1332298278",
    "entityType": "Track",
    "nonce": "0x24481f223f0a7bc7cd24139de6e0f6094cc0f13f16fa71aa26332fbc0473ef85",
    "signature": "0x7915b9141eeca297d0289766fddf17473aec617094cee541e736c54fbf24ff2534f39f596f37f7bd5308a7297fca66ec5f4c626a063870d85adfb0c74f42ce2e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}