{
  "manageEntity": {
    "action": "Save",
    "entityId": "86093227",
    "entityType": "Track",
    "nonce": "0x221d459b25f35b10d3228de048b8a693ed5f68cd69e4744dc72fd8a85ef487c3",
    "signature": "0xf22f264c5f8e7779e51200872a856a27c23764ec45fb71c8c75794c5a1d4d0975ea87731c36130bcf144f5cc66a66a8af11e2afd6b78abe44da3e77a4d1172471b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}