{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xca40e55ff1ec1d1da6f5a30c1d86a8590da1fb3f506ef6ec6aff3b7809e74302",
    "signature": "0x408df6004616e5b9ac025b357500bc674c8eadae8dad4c1447d141107b286f620f162b0213ee380f4e6dca2e1c03a7efbc86b00f959adfb93db643c6f5acb4951c",
    "signer": "0xf2F643c736F9D61C47392c9fF70bdDACB4dA189c",
    "userId": "719876985"
  }
}