{
  "manageEntity": {
    "action": "Update",
    "entityId": "511698349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarff6gnfvui4grc2ci34tftaavovlgwjywwotcs5texyhjjq4p4ka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":413945353},{\"type\":\"playlist\",\"playlist_id\":1307061493}]}}}",
    "nonce": "0xd96e3da4a26926b9135b3bceb85640d8b25e4deae0a1eec88b7f88d885bb05c8",
    "signature": "0x924a363b7c5bbe233d1df10aed5c79d06c05c6b200e15b3caeb5697fe774f59d3d4b3678a3346ec9b2d53c311a1d37423242d9d0a7e00d3b16a2fd21ff70fd8a1c",
    "signer": "0x10bb2D17C512CF574a9c388986b5f2cDbE1dC22A",
    "userId": "511698349"
  }
}