{
  "manageEntity": {
    "action": "Update",
    "entityId": "873019989",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa95aa440a556206f03dcb49c2cb085305568945da8fde67bba9c121fd9b9a89c",
    "signature": "0x333b5dd6556aba22274358bf02d7dc72459684e6550287075ae8384a2eabda883421a847f9695e532968257446d148047341cc7f02d8d3f082717191b127d3d21c",
    "signer": "0x0E491F52f82815182fa02FB40bD2F154a87fBBBF",
    "userId": "873019989"
  }
}