{
  "manageEntity": {
    "action": "Update",
    "entityId": "700531368",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd1adde239b78cfcf2ab9fef1d3d51c31784a5b54394c2e2d8a6482c5112161a6",
    "signature": "0xf1e603ffb032132ad152079b881190da701447634466398b361230be75fd5c5f035c32fabb85818f2213930a0786f2336cf57b12505d69152db2f770113d51ff1b",
    "signer": "0x715aC89F33666691AD0BebeB284C380aBa10caF1",
    "userId": "700531368"
  }
}