{
  "manageEntity": {
    "action": "Update",
    "entityId": "459370681",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbde12f618396cd879faeaff31c78b9da041fa7e567f50f3d100de99c768ed266",
    "signature": "0x7099431c2af241359123af5e8f30a90d03764165cabf303d778cb8bc183955be7f0ef354ff9543c6a2f0ff50923c7c5ec55a9a13e849e55cfea17e580cb5034a1c",
    "signer": "0x1f60319A5687fCAE1a09B631FC39BA030Df6A3c4",
    "userId": "459370681"
  }
}