{
  "manageEntity": {
    "action": "Save",
    "entityId": "1056727",
    "entityType": "Track",
    "nonce": "0xf1053744e55d66bbda572a04b6c5e3d4d0356246b7ce047fd95ce7c0b6b79f8b",
    "signature": "0x8f869e679ed975d0c28d68fd847454ed107745c2a2727863fdfbf68bff4c36a93eea1b775403cce7fef9e72c3fb023e2f0a79b4d4beac2e18faec95800d36aa01b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}