{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849737890",
    "entityType": "User",
    "nonce": "0x83e98137bc0f972155bf3d8ed62fa60c8c54807759f0dec3936511d3b2160600",
    "signature": "0x391331272791d3e019dfdac2a01d8171e3ef9f12d905e5eb2f63f4020056cb620129b4cf9b78d8d4cceaddf093041828ed0125dcd60c727f45b5fe3b6bc464491b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}