{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x4ba37eefcbf1961c3d4fa4a44e159f4ede8a19399f22161a5e3cfb7e21c004b8",
    "signature": "0xa88d473f69759bcfc07de2b583b88ba4be0d3617d2551afbdc242c310e78f24061d5b8378336542f459d74703b91f17547da440d028dc2dc349d254c4cf3f66b1c",
    "signer": "0x4aAea60f569dCcb07000e6BE00AdcC7F106eF3Df",
    "userId": "353528"
  }
}