{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121018469",
    "entityType": "User",
    "nonce": "0xd1f604ccb8841223484b463b6efefefb72cf5d8b6c48face16e0e8ed4c3cb658",
    "signature": "0x61662013ffc96da59723f7dfb9aafc3b8a04a642dbe26f7f0f66faec716468de5176946c6302829e66f6c50d89ce8799214f898a8c8c2819d86e47597a57e91e1c",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}