{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x49ec033fd7248c8d1fa705474379894093fc6c6b3edc6bb67f78da605a76ed9b",
    "signature": "0x42381d087c1a0b81f99a0943ec723fbcd91ce73c6e7b49584520ee4f845807e67601e8caf76effb5f9ae645087856deb1823dd37a0e5bc766034b82f8c0cb1aa1c",
    "signer": "0x3B446829846E4Dff44d7a596d5B5E2e7F6f2A2F9",
    "userId": "784506004"
  }
}