{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x18301ab8bef50023fa0f0487f5cefd42381f71945b52a433f196698754e5d3fd",
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    "signer": "0x75B8148F2bF8a56361A3de893081985CeB812562",
    "userId": "654855960"
  }
}