{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1230",
    "entityType": "User",
    "nonce": "0xe4d888ff82cead9c867fbfbed9a15cdc043cfffbb64e88099e276106e5e6e64e",
    "signature": "0xa222a9e270f17518c8ec70b09a239cd6a61816c69ce889904fd01ac576d965ca0113ab7ee244edbd2aa956d461435552366c442722e0ab7c4aa38dfb6dd1097a1c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}