{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1555",
    "entityType": "User",
    "nonce": "0x6afd27c4710ea0753b02a8c1f737e576ef95ab9e4dc0ca6a912561423d9c549d",
    "signature": "0xbac57f8ad2d1551114414ed5a9dc04ab4b80fa8ad811628b81e39cd5468f127217e35473bc3e5471dbbad4d814fbfb6db3492e5bbd16bd5c7128461c9da32d531b",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}