{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "186120841",
    "entityType": "User",
    "nonce": "0x3dd780d24bccd0d462477cca9f6a47baaf381e0a4723710f1b10a0ea70dc430d",
    "signature": "0xb700e91e5328b5b6c93d9712e3891164a16079b906e584b2d4ddbece67cbddbe0771e21fd1a8ac4724edb0206becf9b8bedc20d34b17355a5e072ee6256cd5c11c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}