{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "22964",
    "entityType": "User",
    "nonce": "0x0414613bd694c1ff879dad48d0c19cbfb93920b62998ea691a8343d93afd9ec5",
    "signature": "0x0635ea89ee6034c978f476924542865198213a4b64d0caa2e08de89c0b818cbf78d89038e7b9a453ff4b87a7f22eb054e1d71d471c346ca805e4758859c29a691b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}