{
  "manageEntity": {
    "action": "Save",
    "entityId": "932453252",
    "entityType": "Track",
    "nonce": "0x7e6ba7adaa99c645cdc4ba901082a711894b0018b7a0cfdd54af45bf87a2f28d",
    "signature": "0x14b15f957c654645af06e5dfc55e00b4d20f3d0715549d626fe7d1cd39a5c0c812d377dedc9d50005daea2f364c7e6511d623e8d5749625e4dcf6bf0600b45101b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}