{
  "manageEntity": {
    "action": "Update",
    "entityId": "53983628",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x480e8528faeebaaf08e192d47192ffdbb7b5205fa05f60542740bda11f3a084d",
    "signature": "0x6f6ea3dc50bacca2cb7aa3710c6a87d41c577d4841cc3a29e9e05776d37b286e6bf26b96053af5e24609f82e027c45e1fb577d41432d2b495c3bbacb6b43163e1b",
    "signer": "0x03BB894E7BF8807c3280FF09490241E9e1Ab2e56",
    "userId": "53983628"
  }
}