{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x31d3e5d8cb17024279f0d119bac90ff7d62ddca4a619393d1951a476905ad1d0",
    "signature": "0x88d9f516dc2ab9558c6d9f571a90a5435397182a826ed43f1d02b15b6b00b03c7a834a0fe6cd609975cabb02039ab8042fe28a34c10ce61226257769545623b31c",
    "signer": "0xa853bC537cd0763A207f2094844A7E736A580760",
    "userId": "198915134"
  }
}