{
  "manageEntity": {
    "action": "Save",
    "entityId": "784931",
    "entityType": "Track",
    "nonce": "0xb9fb125c49768ebbcec12bbf2c6218b3e64e03c01b9823de781978ac7de96b4b",
    "signature": "0x1f33730487102853b70f6675e316550726d47dc9205a2491a391a9bff29e090b53f32b46d35bb8c7a47ecf9a914979878aab3315f11586c85e5e5b6373bac6c41c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}