{
  "manageEntity": {
    "action": "Save",
    "entityId": "536433241",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x165da7f5a86e5ca0ba6638c12d0afc5ace116e9901537775b92b18a3928f36e0",
    "signature": "0x25095f96121a70456ea4e7ae5ac7465e1edd2c8e45c04ddae17bf1f62a5a604a3329080fa56896f5bf5d273fe255806140856c69953c3511b61f6157f20fde041b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}