{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x87879061dc5bc2e64dac753024fd9d005d9b8f282e26e62d97d9725095681ae2",
    "signature": "0x986987bd6f5196b2f4393933bad823970e01a43f9220e0f2dacdf0cc03778f597a0200436fcad8aaf8b14413b955be2f9c2a5112feb08658803613b4f09ed48a1c",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}