{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "570373843",
    "entityType": "User",
    "nonce": "0x9a3b331b6c624887af39625c3e9dc3021426c7978a5fbe705ca741ffc335f4e8",
    "signature": "0x10afe4c8aa92b99327f784499532a856222a545b55ecb528dac4429a8e33b3e72912ad1176be7518eb2cccda47319fed2bda9e184857c3820d13e40aa0d248e51b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}