{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x60783a603e49c06afbc9e1cfebad2afcd7513e859ec4fef1296cc245b7819020",
    "signature": "0x4790fd11326ebc6a263ccc4afd4322bece5c1691ba51373dc052ed2921a7e880677f8eea3c0150d65f859421cd17e7072298853d30f056f52ee2ed0c4ef3b0851c",
    "signer": "0x31f113DAfe6A8b8032CaEa0Fd666C5Ea05E56332",
    "userId": "287310001"
  }
}