{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059844",
    "entityType": "Track",
    "nonce": "0x72de0017aafab912189b0242c03e6bb6935c5bdfb4b88d3b712d0b659f811a5c",
    "signature": "0x74328f2af32b81362d6196d98fe8cafbb2e6685b20afc63a6585578cdcc72b867b43ae03f81818d88ccd47540261e25ec1b51e37628794656c73966085bd50bc1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}