{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578896837",
    "entityType": "User",
    "nonce": "0x1fb51af137c1fef306ca9f1db394496c835a47948f2639945c777ac752ce25a7",
    "signature": "0x210f1de28f9cc71df0a5eabe2c1e5a80a11694de386386b5180bc21696845fd6655adbaa4de46da60bba45d87f9bfb0eb819d339c69832377811d926a16fd7201c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}