{
  "manageEntity": {
    "action": "Update",
    "entityId": "983839410",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7022e293526649dd9f1f0f76aa181c4689eebd551110fb1b8bcdc73eb835b1b6",
    "signature": "0x857e3af7cbdce987f5aa0cf86756ac6af66200fdc53929c599cb2a8432234fa515d010b48163164a39b99fa662a30efb0b39d869a145a09b2d03d3b0332260011c",
    "signer": "0x1f3C9a2A07c1F7Ae915Eee4eFA3E48f63a1Fecc3",
    "userId": "983839410"
  }
}