{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74701",
    "entityType": "User",
    "nonce": "0x9c09def3d339a596a8d3063e114c76d663bee050cec263786e964733edf4ec35",
    "signature": "0xaaea0514dfef855c4cd5d9c2f9d874b997b8bd43708feb87809c531b080b3e2272bd3c1744a5b18b3ea3bf8b1b95366b546d32adbc771bdc2d55400855eb5f071b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}