{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7688",
    "entityType": "User",
    "nonce": "0x53a4cf1c41feab31845e800e2ce7ae7b687923fe5ea42016e0d2da32ed19be19",
    "signature": "0x543a15e86dcc5bca411daac5b35f6188fc8a1ad8d9cba193c3bf1895413cd26d3981eb0fd6be0f8a8773f869e0020ee9a5966f7a91fad887371860f7ed06a1841c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}