{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138931755",
    "entityType": "User",
    "nonce": "0x4db11a6813d30bc807afda35873c6319604e7f2d5283b4055ee395850b0ae9c4",
    "signature": "0x282f4fa2fb15920ed1abdf654e92b1c2a89b5b6c5c4c43a28dd3eefefbc1fc003019d99998b05534baf5a5fbdb0e01edb5fabdab9bbdd37cf0cd79b2de4014611c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}