{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943474958",
    "entityType": "User",
    "nonce": "0x5f8c6c4df5631491546d68e8e51979c551ee09d49d8fd48f933945587f8aa511",
    "signature": "0x0d82673a31192497cb3582b62321ef1e68af97a4bfedc3a6cb446f02179dcdcb320bdb58a9700d414b9ca519f3c9a0b3d0c513b5407a58d14827108e4d04f4f51b",
    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}