{
  "manageEntity": {
    "action": "Save",
    "entityId": "135545",
    "entityType": "Track",
    "nonce": "0xe5c5807fc4f653a11bd633f6c7b02253f5a414e8e76697921fabc00ea92b28c5",
    "signature": "0xb1f17263db111b751868ec13cfe7418da7d31d757507d2c7ded0c9ffb5be798244ac230b568546bc004f228bdd7cf8b42d4f4ba9e62cfa0a553c43e2d4927a4d1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}