{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x61e96b7dfad9d67e0fdcefe9042d56b6dd6e395a213a69f12cd393e67ad4fb0e",
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    "signer": "0x23Edfefc8d492d2d9b10A5ECf1F60c1eb77c6d2a",
    "userId": "706973233"
  }
}