{
  "manageEntity": {
    "action": "Save",
    "entityId": "1838543551",
    "entityType": "Track",
    "nonce": "0xed9628703de30d4b2ee1d70e6bc8902d9bcd193dad8e6603f7959793f27a5655",
    "signature": "0xf2110188eeab4d7c71de30b5e7cff8bff46a595f001665f98cea72a1f92cb03b126a3a966799c3a200a500536647f4c13d14ad17716d3887f27969719266637b1c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}