{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2cc5d2e734119aab63fe269993bbd46cd6a3381aa15017fbde4e42584487cbe9",
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    "signer": "0xd13DaA6FD8aC5f5020F6Fc5e9f048B4Eb1bC979a",
    "userId": "297845735"
  }
}