{
  "manageEntity": {
    "action": "Save",
    "entityId": "14172980",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0d7a625410b23a0e30264b426d43f9e80b6753996b15c6fb1a89df85253436bf",
    "signature": "0x72a3338aea952b8f9e0fcb440043cddc97fdd7a1509bd57f383c25ed0a528db40d0797a51470b26a448432b73d51a806d5dfb51b30099c1d9e95092e3bdc1b531b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}