{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1560",
    "entityType": "User",
    "nonce": "0x8f3b817d2fb6c0c65b4acb715143cafa304a5a39f768ff70cbc1d8b25b7bb2ee",
    "signature": "0x69e52db7abcf952c2fe8e12e0dcddf5854c4f968e2e001b74f75a61dc6c295842ac53251393a5902e36f37aadd24dad970c9ece8dc47ae8dc899ea3397ca60031c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}