{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54996",
    "entityType": "User",
    "nonce": "0x679088721618e6f580a2181d118af080d013a54252aeb804b1f596830d12f983",
    "signature": "0x57fbfc51dde92753a78375a24b803c571d1aac9d70546d303004ed8aa983308d5206fc9e8cceee4ad8816cdf65137f029447ec2cb4d0f82bb1e9fa48ed67600f1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}