{
  "manageEntity": {
    "action": "Update",
    "entityId": "991400949",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9876c677590cb1766bc4d013c0e1bd4b5e806d52a2a3b6394021d307921ee4b5",
    "signature": "0x760d2a6d67d9400f8b926300871573f96735ab13dc4c9c79e0f38ba3cbe1da434ed5f2953c5caa01ff9781d62a6c5d78086e19f4016ed23bf1c272a3030763da1b",
    "signer": "0x562715073386Cb1a771d8837360200B170BF1753",
    "userId": "991400949"
  }
}