{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x487011960a9a824842fb99303561bd86827b5dbfd890dfff86a8feb63db50a91",
    "signature": "0x02a18c904db6af8848676ab7e98a9cb8fdc0f377f3c30bf0a8940483f29b265b74b0ac921578d76bdf9221ce940483647a3e8895ea240136e46829947d8c165e1c",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}