{
  "manageEntity": {
    "action": "Save",
    "entityId": "1338123584",
    "entityType": "Track",
    "nonce": "0x194277d25740574c203dd115294b697d00cf7465de6082dcf6bc7eb5cca78780",
    "signature": "0x7b73a11dfb888e60dfd581dae54cb5fedb83bd151eff779a4fb81f87cf5a029f126125c4b495ab0e54fc7656c7bdab098b46e9581550cbca76051d3b7ff6776b1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}