{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xade676a989daf6142c449015b0755932d158bb9dde3ef6e1dbce3b343f7d7134",
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    "signer": "0xa88715421a033d43379a5453E11b695CBc643d95",
    "userId": "923355785"
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}