{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x42a69f17902ac5727becf5652bd1f52cfb1facecba2a116dfd5628c0097547f3",
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    "signer": "0x2F6Fd48958D32D1A4c1606bAF9534E2Cf9d824f3",
    "userId": "846363730"
  }
}