{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d9d64612b124e90e58e54d02deb45f5edef4ba8dcffba48003d551319eded28",
    "signature": "0x846c5c6aba67fccefd7ad15aa600c40190e966c2db7dc2ee609c7d8cfd31fbf00dfde4e9accd586d51d04f90ecd333a3f95aeacfd58526b6788d7fd180be98bb1c",
    "signer": "0x6c298918E6c027150977e2c982e8944E91Fc7DA1",
    "userId": "18171894"
  }
}