{
  "manageEntity": {
    "action": "Update",
    "entityId": "855403",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x118ade53c0d4d667ddbce69a18fd09ed0bf531214247f407816cb03a87a10549",
    "signature": "0x75ad89e35eeb711da5f12b5fa4986dd883f07e7559ebfc5331f4b97116ee7140041747cc4ad65e35d8d0f9123aa5f58155b754057fb63f0f1097e1c46841773e1c",
    "signer": "0x8C7bee798c0AB93Df67Cd00879d67b02274644CF",
    "userId": "855403"
  }
}