{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf94a8f65e2ae522781797bfccbc80a3d0e3100f204b4dcf90550870e4a30f266",
    "signature": "0xb6d18602d5c81fc55426a207e559c72dbfc23dc7d592cf1b2b4534dd4bd7f9641501982a5c65cf9c17e9edc1608cdd534b21fd8c4adc10420fa9efe9e0089aa41b",
    "signer": "0x3ccaEFA4fFb59D7da3DBD0fBD2DF87d68C818813",
    "userId": "423544032"
  }
}