{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b8c5fd3e7ce4d854182ce5547a80a0d24948ffadcae41be79a23e9761eab455",
    "signature": "0x0dc603e27712b7ed196310b3da9ce9c31dd53cf57cb593ecf1f34c08cfbe945e35f21b98e0fa070327d83ef5c0bc45333fd2d5269a6c1ef40fde79f79e2e67c51b",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}