{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac8bff7ab5dd04eb3c83d6d3162c8c74b3ec774468cf9f2d9f9911a71a5ce3de",
    "signature": "0xb2cba93dd392388561447baa166103b1b6e51ca8ce194182b3c40fd608e7e88e2d179adc469e641a7ff002c2df5a54fb00bd515391f70c4230bcc7bab1c2b19a1b",
    "signer": "0xF5DBE309527b5E23c7b44a2DA0d874AdcDA732b8",
    "userId": "961733959"
  }
}