{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x0e1d7c4a686122091cbb48891bc14fb5ff0e9cfb4d88fd8d90c2df1bb2ea74c3",
    "signature": "0x04b3b5cfc6a93e3a60cf3e5065dda759b04c828cb0f820e92921a57abdeb90982a805eb8896e85c6489b14d1fb3f3695fb6b3ab2a0268bdf184b5feeeb9742d41b",
    "signer": "0xE46065A6FfBA098285D7bDAF191AB891Ab19085c",
    "userId": "247933491"
  }
}