{
  "manageEntity": {
    "action": "Save",
    "entityId": "295366862",
    "entityType": "Track",
    "nonce": "0x04b5c7ea1b60e28d709d87c82bccf0e2c3a1cb2d227214e8dd9c18137164e3a8",
    "signature": "0x8b8fd5b895648d030051257e43c6160c7586f6d888987531aa44eb8848baf066072e11df479ded3c4364c36c74671bc245f2351c346a8f12596c3fc91febab691c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}