{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb9ddf7e72ddb7717bf70973c2f90dfe6ff2d965fd72e990a0f33baa71ec11532",
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    "signer": "0x205AB12f2C6e727fb65885B2A70E722f58C79a8F",
    "userId": "333383841"
  }
}