{
  "manageEntity": {
    "action": "Save",
    "entityId": "1906165753",
    "entityType": "Track",
    "nonce": "0x7cfd720205e1b41607a1781f499219d862feff1cdf3c32e328b7c8e12d9a8030",
    "signature": "0x46039436678cb7440d244179d9c129579c626e9b7d9e422069bf875cd4d2f89c7f110c710ddef471bee77b5df3524b52230921bb1ac7783044a1aa844000367a1c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}