{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951116729",
    "entityType": "User",
    "nonce": "0x4e8d5b0bb16b69cc0b0f67ee4cd7c371df428f72ca5af2ab135f0242010ecedf",
    "signature": "0x151b9386587ef72d5fbc0d779f49820bf63aea1a86eca261591179121b2fbdf86f249d690280a0cceb381d81222e977152a243bb3ec5c0cc9b954bf378cc05471c",
    "signer": "0xD07A680d4F48bA7Cc076c23f40870AccBbad1987",
    "userId": "16411799"
  }
}