{
  "manageEntity": {
    "action": "Update",
    "entityId": "887741865",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x473624b1d16a73b344f812e5c70768c9660f1616878ca3aac637384d40313769",
    "signature": "0x5729c2cd3eb8ebb71cac5c2adb35966552f6fd0dd709880cb9a419272abfa2cd5c26c8350e1af8a922d1c8f72fdccc7b4d138bc40abbd08ff1022ade8b3f68641c",
    "signer": "0x2230770EC85946F97685aDECD4b734f51662F050",
    "userId": "887741865"
  }
}