{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9cf141c3af4a46f09aa313955fe9ccb3b9835029a7a97791793dec40d9cd4a2a",
    "signature": "0xe8e24c076105d24bac168207506443ef83050001d81d60b3883b0ef55afe868a74760f7f5083f17491459caed21d767635652dc1da4c7f6faa48f3ae4ae2df5d1c",
    "signer": "0x44bf7d0C940254c569e1f698bb6B86F3e65016e1",
    "userId": "34068463"
  }
}