{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420081314",
    "entityType": "User",
    "nonce": "0xc39e16e8e25057fb2d099f2b4464e22b170f1fbee6af07369938bae996c67181",
    "signature": "0xf380138cf901d03033c2acf47ada6cfb0451a7bbc7bea35f69008ee6b2c11e8668be0ef017ab961e98017e1376ff59ececd254be229b74a2fa24abf0cc816cdd1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}