{
  "manageEntity": {
    "action": "Save",
    "entityId": "1844565405",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x766c43906ea0233881dec30babe6a86aba07768d74a63190ff1ef59e5eee7cc5",
    "signature": "0x96b120c97e1eb1ede12aa27173099619de9eee5c4fe76437c34e5076552cfe7669b86ec37d5929e393de4dc292dbec885f612c940ec846f2be5dcbb54fb7aaf51b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}