{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320311",
    "entityType": "User",
    "nonce": "0x63c9cc4553b152210a9281b43ecda4c05ab0349b8c5ac9d1d18b28e83d39c6e8",
    "signature": "0x38e4f9b86f3fdae8628c8e898e5771df580b8aa2d8fd0ae50c5ee0dc592938313d65e7553a9a82ec41f058b9c94ff1515a3d4caafe4516ced7b9eaa998a652021b",
    "signer": "0x5c51216FbbB9B7A562f11267f91f72A7be1e8DE3",
    "userId": "105826"
  }
}