{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x34b624c04d03b49849b121ac601af968df25be159344f4206b6f4097d2ea7d2c",
    "signature": "0xf1f7e18bb84cc42b84328c6e4c54617bdc7b0e9218595b00796bcaf4398b8002287abbf00302dfde58df4cad7f635308471ae5585f9dac3586dc54f97223416b1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}