{
  "manageEntity": {
    "action": "Update",
    "entityId": "12639568",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x538e1666f8bbbfd2304bbfa9aeaf09c13d33a6ccb1122bcc2ba552f56ef0493c",
    "signature": "0x544dda7994cb6c90d1bfbee64dbb1ce3d36092e0441ec14d415d60f69fa0c54f771701653e464cc2261f3de77912c0675e23aa23ce2f95730629b1eb6fcac6801b",
    "signer": "0x3A5d9303814AC95Becf9EB5a6c572608f82b3804",
    "userId": "12639568"
  }
}