{
  "manageEntity": {
    "action": "Save",
    "entityId": "2001436017",
    "entityType": "Track",
    "nonce": "0xf2cba157e0bb2f8feffdc71bec0dd40a57f0da3334db8573ba4ce690183ad8b3",
    "signature": "0x8344144124942e69cf38f37eac33837128385c0e5f6ba9afa558e96fb976874e2d569fc772085bd4b251c753e6c050efba1534040b51170ecfaad64a2103b2bb1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}