{
  "manageEntity": {
    "action": "Save",
    "entityId": "1943448009",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0960e22b5f5fed4443fc5c7a656dcd1586638c6a2e7bc935cd9d52ed843a33d3",
    "signature": "0x8b69de64af5169d3cb3e03f5867493d881ba5c1b78a8c538df765599a00c6ed9385b75d5ce408cba707faec53ca2dd05eaadecfefe19eb56ce4489cdf3b166181b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}