{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3867",
    "entityType": "User",
    "nonce": "0xaae1ac564d44bfd45676b009e0dbc71c8eebfb69dfe84b6f262668122964efd4",
    "signature": "0x68211cdf65c83a2753035a970c983531cd5fb179b4e717f7ce244aacafc2e3a507cbee2d27e5290809fa5580bf2c2775cb7d2bc5df15907641ca7d2135c991ea1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}