{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb674dc27a78325c1e0038b49122c8cf653fdfa5497e3a5831a0441564b09b72d",
    "signature": "0x928036a0ba5784e99efc80f23c2b05d45ddfb8d0771eee7bc0a2c7d8a411eb703b88058f8cf01474a99a0a35318d4c0eed274f5e2a27ece3211fe30aa46fc4401b",
    "signer": "0xc28356aE1227eAc8E34f3D204543cAEe0244Bc47",
    "userId": "250403405"
  }
}