{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571117272",
    "entityType": "User",
    "nonce": "0xe7f4d0fcab9f2f8d2a39ab34282f7617af81c8e0b9ebf9dfd677dcda51f45de1",
    "signature": "0x5cc8780815b6d81df035fb52a559b911cd37c39895002f09305ce855b3f247f91a9fba6baa1e41dfd23f563227b9ed83d434e5e501de260f2372e10222a36fbe1b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}