{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x8c8fd1c7afe10a460a37467fa3121938fa08a6a9edfb9a609acc901261ffee72",
    "signature": "0x5f4922df82aa8b78c81063e5c0d0669395eb9a9de913b744c2bcbee5265c2c432cbaebfe85c96e985d70843c89507420f300d8718f4a74f668f07cec275b0e561c",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}