{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x37158065e34e8f9e50d33ec59d1096d08952d5746fe05295c2735d47bc6d4617",
    "signature": "0x4f6889763505972dcdf62dc81a3d146a97c68896827aabf69126ca0a22d98e5b04e63f079cd5485376f8cd7d25943acbc271410aeaf544462e7a5bd6feecb9d81b",
    "signer": "0xE5c3922424A1B896ad08ED5889f36Ca5DC40660a",
    "userId": "229327490"
  }
}