{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfebb9b044ed8da49f03d6c43c987b8e0bf7fd973da8f18327951480b2d366fad",
    "signature": "0xdb5673b6d97576fce75c3bc23007a28e60b4541c5c269ea90b8f502a358b3fba58fcdefc7e6a86f7ca01ba859d1e8575f226b724c786470995a55366fcc76fdc1b",
    "signer": "0xCe072DB20F5be1b27734687e0293F58fdCa85906",
    "userId": "679000026"
  }
}