{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "555449794",
    "entityType": "User",
    "nonce": "0x2e72a5765fcb05a8420f855b8c3c4e5cf0750e190db911e5bbe893cbbac41c52",
    "signature": "0xffc13d20e7cac5bc3563cd6a7d172d85b327ff2ad837eeaebf1fc66d50f22fff1dc0936aaad0257a062f2e0c34beeed977a9268e91b0c40ae3dd64a4d292ffac1c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}