{
  "manageEntity": {
    "action": "Save",
    "entityId": "2098653039",
    "entityType": "Track",
    "nonce": "0x950361e6563c0f41eeb4788a36b659a3c3ff16435e1ba9144a61623f5700c3f5",
    "signature": "0x4f41a838fe9bd2bf8fdafce9469c6e8a68b26c25c29adf01dfdcbd8044f205d912dfe222621a677ac20646716a4be4c94df40bc7af3778b3299f0792a1ada8ec1c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}