{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135721506",
    "entityType": "User",
    "nonce": "0x1aa4d98aa77cb0c3887c1c058609111c993ab193ae24d4221379478775519d08",
    "signature": "0x4eddcf0f33b79dfc3dd54310dd857f425e8599ea0c2e8c2cff331d564aff0f4437644662446bdb2a11810628777cc7bcda3d3982860b8ce80e1bc7d7660b41ec1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}