{
  "manageEntity": {
    "action": "Update",
    "entityId": "575352654",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x938b4d7a8b6f0491a5b3a52b184822fb221f63f0db5491f2ac1526fe89e7dfea",
    "signature": "0x2c2ae3241095c3b83b18231920cd4e887d59b2b8c124e65f87c8e25d9ace13ad266f8629b1d0c3cfe880f61092b5136d8235ee3a479e395fc52cce9a62565af71b",
    "signer": "0xe45f89E2286b04cb9A2Fe2260cFc99cA98Eb80F8",
    "userId": "575352654"
  }
}