{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12030",
    "entityType": "User",
    "nonce": "0x2c78a8e16c0218ad4f8be32b5123cd6baaf4a0752a52b8733118d03a210d10eb",
    "signature": "0x4c7890a9fb167949ddc243139861a43b68cc1be32ab6d94fa9f260d912bc134f1adee4604fd9be509d3138cf291d9358202aad4d1c5f348b95fce3932a33c82a1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}