{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "630673992",
    "entityType": "User",
    "nonce": "0x3a081658767c0f0c89a445aa14e07f1a240c4d6b844c5696b3f004dcbe94d757",
    "signature": "0x8ab3639ec323a7b235dc4152e0f42079debb9dbf016e9cb59591bb0c3e1ee1806e6f9ed69d4253774d26c028b917261a48518dcc32572f09656c57c027682a0c1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}