{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742907554",
    "entityType": "User",
    "nonce": "0x300b73588b773664b7c6d69a829b44c706ee26a059f25fb8922a35b0b3d1cc1a",
    "signature": "0x05dc7f7532b18863e6c3f92aef9e0ce55252c6457614f98ffecb59fe4f37c9da37b710a834625f693bd8a78cb184789865d23e3e65985d631ca44230dc8bb42e1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}