{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x485e83b1c0e68fb5ca51dcda5ef8b9d33150984a7180367695ec8904836d07c7",
    "signature": "0x6e98bbcaa44f1a4f7586c8a2c8c40e2eb85b25ea9a2cdd1fe5455c58913dce6a06ca8b55e4b70dca975f08c3e0e5d5e9aad7c242843422546f1ecd412893ea9f1b",
    "signer": "0x1350Fb660d27De7Af2914fd50cf0baBF74553150",
    "userId": "789409949"
  }
}