{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8d457997e20de4d7d6db482b5123c0b6997cc35ea402151eb9d7bf3884f8760e",
    "signature": "0x6283f70ab3743ce46982fe05ff605f023e8ba8771276e4c4f459dcc050f2e26675c6cf78568cce8856a9d79034386af9e000a0914154b9ed18f66f28e4a6bb171b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}