{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377839503",
    "entityType": "User",
    "nonce": "0xaefa82f6a15c320f2d68bb11a4b36848ffa4054446d465d7b7dc938477aa417e",
    "signature": "0x275900317e083fcf53bad22bb2defa0c9f34cac6f834780f4e907b52839b79783bc55f3f73e37e698b36f1c9579819b0d5f539ecf86316d847f53765cce2be7f1c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}