{
  "manageEntity": {
    "action": "Save",
    "entityId": "317342",
    "entityType": "Track",
    "nonce": "0xa152091b8275336e0c6caba2b96d676c26fd814c0ed7a5e2ba8e359367f50926",
    "signature": "0x1b543af6ecc2895a8e6724238f8fd48f3ab6e45bf24e7b95b7a2f7462490449c00f3e87157ab51a02213eed2f3cf0d9bdf28fcecae1b00d6d2906d759e291b8c1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}