{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648705054",
    "entityType": "User",
    "nonce": "0x1bf0e65808ae5d97e7f8400db4d3edd1b5860ca711cfda14da1d29750aac79d3",
    "signature": "0xb30aa9c6758d6aed9f8e01ff5c631f3bdd5cfa51eece4fec7b23f6172f11e7ff6ddadac8c178b2220a6b04db2a40233dbec238a049bb492a8c4bd1db276b19031c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}