{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x40bff86851d9665ecee53c86b611db9ae474f95fa60fe4bea02582f3f3aef9d0",
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    "signer": "0xaB187024B71c661fbAEcAc54b5dAb20a2701b7bD",
    "userId": "785276209"
  }
}