{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x6044baf8861b3f351a56aef9ae1cb2c3ea4a453fcf16b80a146ddbf20c506e58",
    "signature": "0xa13c8bf6aca36aab4a6ca7b65b816ba8de302d005c1e9c54ac3bd96d1635303b01cb5edc2f0fae6e41a002a7020026db52249c422bbfe29c6f55a403e46435991b",
    "signer": "0xe083C6657964CDF8edDa4A2141B67047B9816C35",
    "userId": "861832117"
  }
}