{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0xa2449e4e853adfbfd789afcd7a46ed496b214e8620f48b1caa52ab3b6a729d80",
    "signature": "0x96a7603d2f3c0b946d1ac7d528e25f8c53184b21b0c12888c4558133c7ff66404b8cff2f3bba225d2b252826a4827bded9465cdeedeadf2ac0135b84c4eb65c81b",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}