{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ed85fa665698416791591816de324be35c3dbe13e8bdd01eccc789a89e1853d",
    "signature": "0x92e42ca74c1c24e0cbd2bd98cad18182c214847b914e82b6fb0c181f977bf64526b1068a8f1a590db6e6aeed9cdfe3910288bc43dc03886f67daacb330b219c81b",
    "signer": "0xd535D648778eB6B0cEC6BA2784b95C4b22b7BeCa",
    "userId": "177038421"
  }
}