{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2dc6fdad65ca410e9b855688eb3c5655a79d142cffda4f96066a12853e2ad7af",
    "signature": "0x4030a4e27326522b54fa2b7c5ca1e179bd53ef32c8208f23241fc55eef8135c56bf4cfd9174545167bd241beeb56ce1656652e5e3b6be1d7fdb7a041801ddb111c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}