{
  "manageEntity": {
    "action": "Update",
    "entityId": "476619763",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x54d60a059fe85360b9dac407a144125fac0d0737f8e3a318c36d8160b5463d29",
    "signature": "0x1d5d84f206cec659be2d6726f770d80791bbc67d7a57e40e3e0b82cd3f4c760b74de4ee1202700ae69c1f8eddb1c8416dbd58397535d2e23c45ee7639a19842b1c",
    "signer": "0x1aff868941743406552B545761a8C72ecF616F24",
    "userId": "476619763"
  }
}