{
  "manageEntity": {
    "action": "Update",
    "entityId": "428362958",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x538cdf32fab5ae60ccf677c01da794acc9436f0a4fd048613a84983848f77068",
    "signature": "0x34303fb48b6b1b7f0b47647eb264a9ad653a17ca108d65a3120488e6162c9c1d52d48d436e726ed0cdd070f3750b89f9f80901047c7287cf50fc4ccb605662491b",
    "signer": "0xe843310494834103Ba1473dE3e5a3233118eC791",
    "userId": "428362958"
  }
}