{
  "manageEntity": {
    "action": "Update",
    "entityId": "303119674",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x09801fe47d99aa3c4584e2d96b9191c241bc4f24d955e87bb6fb481cefec1cba",
    "signature": "0xc675a119e521a9383b65ea744e1e544849cf2c1a82cfcaa281e217e009dc0a973be0a2f4d57793e95b68bd9b60bea9ea5219397f9bc242f98d1cadd80e6d0c4d1c",
    "signer": "0x5042cFD9AB1347cF366E53d7BCaAAF6B75807c8B",
    "userId": "303119674"
  }
}