{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "937299109",
    "entityType": "User",
    "nonce": "0x2b77eb8c5b63722e2f433d96efeff28ac60b66acd2ebbb112590e58b97c0f75e",
    "signature": "0xee65d689b6407d980e1d4bb1a84a0d4632a048ada64ee2cdd44b1af31dd3ef0778c44b15d1973ca2f22fe7a3d85cf375a94aa65fb8fcd71caa62f50ea56a1cf41b",
    "signer": "0x20a821B898F6Cb6BB0E5FB2460eD4225B40Bd68D",
    "userId": "198400104"
  }
}