{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa4cb51a02181d33e2590cf3e2c6615643a1d929eaa27eda85df5067f36761927",
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    "signer": "0xE5C4ef3FBC711217Fc26eb9e11b62ff07b4171aA",
    "userId": "156613390"
  }
}