{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391243",
    "entityType": "User",
    "nonce": "0xefc131828b4bc298a7a72d18e857d37e9083ac4817263dc3b17927ccb401e195",
    "signature": "0x0839390ebfcd049c4f4467ef17aa7e26587cc228e29b8e73f7b919f872e91d3827fa63719f067944766686b0904bc297a58fb58907e6145d97bb3e21af44bc2d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}