{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393898450",
    "entityType": "User",
    "nonce": "0x565049f3e5e43d5df9b1b5e714b308255b6305b4f1297eb013e146d52ce8e704",
    "signature": "0x071ed92c1fe1c1c8c7d4c00a044a82141b6e2318707ad637a2bf165288d5767f7315c93b7b4ec0a6033655f72030b91751117fbb6044e3d060db3f953c006c371b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}