{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3d9bc31c88577b659db728d9594cd19fde25b8746f657af1967fd2f96d5e7895",
    "signature": "0x3c67ea3f482fad496646e660acd5c020d4ace267942233b99027990e8bb036b216997ab9a6f9d2fe992a96a7ad751a3301156097c797cdd8a2d5c06217d5e6761c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}