{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928074664",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3d9a7c18c157361f65ec71a5e568288b2607e33366da2ca4f4dfded3ef293a42",
    "signature": "0x1b1096cfed325cbda067578eec8ef3e73499b116094c841d4be4ef8c17d5552433afbfdaa32a9f51a908a436a90f03ad5e0129f115000dcfebb81bf6d7e8f0de1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}