{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x3f669ef9256a332f054ca46dfd4afa08c0c9f023e0dff59a823ee4f46dc6b68e",
    "signature": "0x7d6282f8bb2dab992c42ef2572c058e8af7e64cce916ea7731b6cbea14c4abb82d7b3676811903487dc63b511b1e55771d0a55bd41a7f4703d0140c464979f161b",
    "signer": "0x71EcA59070046efd3FA56C34886D37c5f3ba20Bd",
    "userId": "566352394"
  }
}