{
  "manageEntity": {
    "action": "Save",
    "entityId": "1934598302",
    "entityType": "Track",
    "nonce": "0x1ccd6c485232a851d9af1c29ccabc89c71b0e67ad50e6b81cad4bc1263693d20",
    "signature": "0x7375447eb87d702cf54f257ad15e6739213ace08b98dfe97a8861041a191d80879c196e39c85840e49bdf3e7157ea80d4df3a5b6bfb105f1d8c290cca0c16f501b",
    "signer": "0x8a278E79c8E7e655B94c3e6798972A44Daa2c6ad",
    "userId": "24098924"
  }
}