{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xff9e2c3b2374b04829c4f388fcb6012e214c277ed4eb22c2c521bd4c304e07f9",
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    "signer": "0xCEb3315f3A11ef494F33B40dE3541224635532Ba",
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}