{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1497323",
    "entityType": "User",
    "nonce": "0x98c628351f71af0ad4b0211c5c57cd4e3279a26ee84d44cf7653f43594534778",
    "signature": "0xd181338886976bfaf8383cfb8cdcc801b01effb85a3434289a43b730e02698ce77c056c73910a395ca32ce3523d5f6201c04cecc4b52f98714fcdec9068243a61b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}