{
  "manageEntity": {
    "action": "Save",
    "entityId": "1769155309",
    "entityType": "Track",
    "nonce": "0xd9e3e08fe60466035f6acc55768ce488739fecb462d56d8b50c791523847dd77",
    "signature": "0x48351efaca659f8a7ad0fc3cbc632b9446a37dc6329cfba1af7b77d8def916333f32d6714c6f758aa053a05efcdc59a77853c307ae7ab14bb7972e09b5ef660a1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}