{
  "manageEntity": {
    "action": "Update",
    "entityId": "473445519",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbab98aa7f74cf94553fccad88f1c8e4688d21f6692f1ff78ca0755e98b7702e3",
    "signature": "0x611ddd95cd287165e7f7c62f7c06ab18a19e74fd261759e01d59d0b5013f1ef83b126dc03516810a55d3f7fd5749f76eb408d6485330b73d1f21ea32ad6dc74f1b",
    "signer": "0xa031396B4a7515E03E7c99A90D7f53b4C887E66A",
    "userId": "473445519"
  }
}