{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x68f46196af51eeb28798efea746b39c2d5295e9a5952fc192c603ba753ca489f",
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    "signer": "0x3893EE54C4B235163CC6aE2c82daE550f2AA6EEA",
    "userId": "850643939"
  }
}