{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1885758",
    "entityType": "User",
    "nonce": "0x0d121a6cf9a2ebf86651c29ab7e0d3850409362f2ccf739adc664d6886e43776",
    "signature": "0xa2e02d135f0a4e57a4d881a7b2ee27215483e9b597107b692a3b2f01e843e7d5232803eea4e318ea31b409095fafe4c3980fb01f4b71fa3a25e5b23e981cec321c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}