{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ce011902dab2628aa4e2ffcaf6e3af630c4073a9b57f6e7fb9cb9be35ccffc5",
    "signature": "0xe016d407bd85e9e4e19b8fa45d4c921b1b72d91af694f4af85d2f4ff9356ace653799ace284a12cbe5934041b2d3a808e374f3a76e9717aa82a546a7e3def2a61c",
    "signer": "0x9C49F861e59a9EB6FB338b2DE88d9d80B6af617e",
    "userId": "623395063"
  }
}