{
  "manageEntity": {
    "action": "Update",
    "entityId": "644767279",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3844e466ca9572858a38720be95366953c92ffd7548610e223fe304850409f40",
    "signature": "0x5bbde1c70ee5ed813db96775df24a7512606301423d82c43980748f29ec6f8de23f153e79b1da3d98bffd33d090ab85405cc3ee17be153d087ce11aec0bc41721b",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}