{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "514182",
    "entityType": "User",
    "nonce": "0x331532ce390f6f9c9a1659698f3d3e5ed753af13216f8fd584d68c8d37a9c596",
    "signature": "0x8993944ab7f3205e6cfba8619fca51f051f96989cb2d57d592222b84f25466c8433b95265513fc04baf051159026b119d67781b06a7de74c390bfbdaf98af0601b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}