{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbc4f72d2ee5aaddd0933959af62c0f9dded050c4aabb8e3d19ebf59e8215784d",
    "signature": "0x034621a03b7a7ec99458d20adb881448a653044a20e7422f31a9bbe6db9ea4592aa48495c61d1b71dfd981d34d7aee9c9dcefb597356c7a193d5bffa02d4f6f31c",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}