{
  "manageEntity": {
    "action": "Save",
    "entityId": "461543888",
    "entityType": "Track",
    "nonce": "0xdfbbe8f9881123bc81b8a55f20647f75cb37608493c2c55a84e7059a5a6a2b5c",
    "signature": "0x3675dffffea63b6c8591bd6f5f8fa1390fdbd5777697a50b2aaf52145435fa00464ec491231857e97df9336be4721da7543f219d0ffd4dabf062f4b0f99ee79b1b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}