{
  "manageEntity": {
    "action": "Update",
    "entityId": "583138572",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb84a5ff4a1def22e75f9c409fb0839286d0cfb58e424208e56cf7d2487d1e6e4",
    "signature": "0xef9de8dd93027048f0e102c813119e333ee0b5e0cf4156de3a2238ae0bc992025789240e47efa186f2cd5a5e84962bc9eefe7ca5aa91d8d922a8c9a3a97352a11b",
    "signer": "0xDC3F1116Ce7B919D352b15Bb4C20db6Bd453F50e",
    "userId": "583138572"
  }
}