{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222",
    "entityType": "User",
    "nonce": "0x9842dde8b6c07ab66e8dfe1eb210906607364235b1708a42c7ef548fb1605d4f",
    "signature": "0x4b03f3f75aa569fc9fcc3b5a75d65f4ff65ed0a28518651fb37761bb81f97890461d038464e5c36a63f0822f99e9acd8bf1904fb29c0dfe4df563b1e2733934f1c",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}