{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xd20183537634ac41494cc8ae4911b4f1e2fea0b7e0d5c211a10e7c3c61236b96",
    "signature": "0x4383e88a4bea3a74bdcb3f9a004bddba1c2af678429f539c6afe831657d3b21f018e2ddffc7c69d344761b8b70e3000c7d3c12f1d93ccda5b226a96991144fcf1b",
    "signer": "0x8A7ef0AfA3C20823CA2525BE46EC0010EBE7609a",
    "userId": "990507503"
  }
}