{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339",
    "entityType": "User",
    "nonce": "0x68f75021df74f1a67894735c2b2e6c02570fd11c8202c30ef16ae4c20554d86d",
    "signature": "0x004d95e6fe19a1af4c2ae4f516369cf5a89f7e9ae71222f00233ee845c85592c463cd92423308bd1e6db5518e0a97d43651e480c2d74ecee9aa540d7613cd3681c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}