{
  "manageEntity": {
    "action": "Save",
    "entityId": "126031659",
    "entityType": "Track",
    "nonce": "0x601e0e4734bf0df50d4e84410619f7324170cf50e807376bc9fc05dea48a1efa",
    "signature": "0xb902df91b7d88870c83980950ec772bdb22ff6d43a8c9257d01f35cc024bbb4e1aa158101c997847b3744f3b6b40b648805962d49e4e780df7fe777e78fb320e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}