{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354908",
    "entityType": "User",
    "nonce": "0x5f78abc358f0e4bf4acb4fa6f265cc63fe05d5b962bfd5abf7a8993736123211",
    "signature": "0x0a635af6a473b26236a567738ebcc6db10f15c9f99ed1492f6ae757bc4308ac40fc05a353f404656b5e3ffe5814aa69699824eeafda5de5f1129589a4e9ad0a21c",
    "signer": "0x569AD4a425B92a964d8e182094f4aC58C0673162",
    "userId": "577745560"
  }
}