{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304857543",
    "entityType": "User",
    "nonce": "0x22f15adcfd65539fb1391ed5d0566af3b961eadf927409291899cddc4d2ad87d",
    "signature": "0x7773689fa00778c3672e14f24dce956438970c57648395511b197a641feea25a799409e99b5e8b4d51167727db7200c705f584198deeffc3385112efc074c31a1b",
    "signer": "0x6fb79570A836Ea8554ad1D745C12769B22f1e4E3",
    "userId": "283478"
  }
}