{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xea4996e6ca685e9e5d667af57402fc8f851b8faa3b6f7e3fc2a602f8a2d4169a",
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    "signer": "0xd20e05DF5b8cb1e52cE88D75a2f412Bb8a61930C",
    "userId": "531366111"
  }
}