{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74750",
    "entityType": "User",
    "nonce": "0x3c86d12124bbf8997f4922a7c3ab5eb90897feb39edb9d7864ccb9ddae7e470a",
    "signature": "0xdce54e3b5d66e69d1ad40e314ca2a989aaead5470871877d23a52a02e3f2faa84c23c1db9f2c9c34907a8317a7cead00917004b5c4735ec30f2c2804f7b4d0ff1c",
    "signer": "0x7407C72d291B1ac83F690D138D79522ED2B7aE12",
    "userId": "389295"
  }
}