{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf19b3796480f8544f5036ea24df4f50c3442a2f974e35f254cd58b6033da440e",
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    "signer": "0x8A7A8486A2ebFD66408518A3dEfF9208e10d437F",
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}