{
  "manageEntity": {
    "action": "Save",
    "entityId": "224426775",
    "entityType": "Track",
    "nonce": "0x5e20ac0b1b97ad8e70944bac59565dc2d31bbcd58bfaaf6a25d6e62debbfe050",
    "signature": "0xd514debab02be60c3ad4fc3e0903de305aecef1eaa148fbf00109f4c6740a3e668da458ef2eff507cd85740a887ad2c45109b4922eb20df505393f012f202b281c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}