{
  "manageEntity": {
    "action": "Save",
    "entityId": "53575",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5e57c917b95bee62dd86f1869becaae4d7e7654e06ac90db78f8614ce50075c7",
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    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}