{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699855727",
    "entityType": "User",
    "nonce": "0xf5e5b7f23a45b81a44f63564e2ccbcc188cfec81e72c463571ee1be23dda34b3",
    "signature": "0xa66f9a810fbe11ea54a8f2c4b9f4fc064282d53d83583d30f5241094d22f775772949bf31086821db3be98324f31c70ab690ba5dd8d6ed0e008cd4a99b7657161b",
    "signer": "0x3606D196411cfFBc994b5d1fA493b4FE439A15e5",
    "userId": "871511642"
  }
}