{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6656",
    "entityType": "User",
    "nonce": "0x9cc1fdb56f0b510c803c8b3598f2efe7c15cf9b1642b1fcf9609e64f7ec6e55a",
    "signature": "0x779a9adb91a9734a35ac8908e3a93320a3b7279a819427c4f371ceaa540ce20c73fb20fab7322634277842bb8e06636c9ddc97b17cac9c3b4b263dab7288a21d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}