{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x82db331d13be019cd3d260dc1397407e3f939863bc3eec97e0abcd0a890cfe53",
    "signature": "0x5b50680d499f366873bfc411e3c65c0f7e257596532e96a508a118ff550fa8a273858da067a789ce2627281a271102bcbe9d0be8dddd3e4b98810a2321b631a51b",
    "signer": "0x4bb1A473082b518026A55062fb8765616f034e27",
    "userId": "235287431"
  }
}