{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f36e097ca60cb8bc0a940621b98af86546f7e004df559395d01fe3a79416e00",
    "signature": "0xbfe55cb6494fe03dbc0b4369994196f548d290047283ad507b7e154011fb20016768804c8b1ec43acb469cad02654b0c547747165707d259422a73a2e57510251b",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}