{
  "manageEntity": {
    "action": "Save",
    "entityId": "1589113491",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x00a92f0143937fe2c5b7be8cde67dac533dabf23621288244361ed8832b155ef",
    "signature": "0xb024fec2181cc92fa8d21aa8308d3d9af765de08545bd10fdb20d85d69b2dd9c0d59bd67a884a6b280cdb68942730a835ca57c996bf78894a13f101161b569241b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}