{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355113",
    "entityType": "User",
    "nonce": "0xe441f246fa4c53b6ff66df2b4d3d613dc39375940407c8230d196a7d92c7fb09",
    "signature": "0x9d0960596f81275e88740015c8e1f569c8b69471d2e5b44050d1a97bc52575bd13ffe46757a17c5d9841a42be93aec23823c14f9cc7845fc47f804a6a58601a61b",
    "signer": "0x5cf424b2E500Ce62e5776d2Fef3867BEA5A0b58E",
    "userId": "465666777"
  }
}