{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x921dab7dbc91a919ac59f093c8b72e4bfe119f004bea17a8e421b4432036e105",
    "signature": "0xb31e561ad39cc2dced02af5046ba935e83ef260fec72fc1384ec23efc71eb8723083f1b9afd6ce0f015f842b8db892425359299b5ca5abcf4c19b7d1bf815a001c",
    "signer": "0x6783F3F251B669E66B7743672Dc2a11bF180B80C",
    "userId": "611632762"
  }
}