{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3ea8e95cc6b45f626cac9e4a2ac777400aa1cdfe1de0e8a76f113649cae86b79",
    "signature": "0xc5bd5563572d8b448f857be4bb0ed23cdda59ea8530186f58b24ca3bff08dd636d99a494957d5414a9c2e68739e303d54cce4fd42071e8a990e152e514001fa71b",
    "signer": "0x77c311fFe4ddCfFEFc638434709Af9aD1cA69870",
    "userId": "788669747"
  }
}