{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2f992e4d28b67470b326c9b17cfc30bb4981e1cb66dec862603d068334405f2f",
    "signature": "0x9bbda26d1e42d85ce1b719d8210ed8c29934ad637141f5a2d5c371f497c0f3541ac04f826d8b188805565f04c57dff7c919bb6e0c98432a50d683411560e07881b",
    "signer": "0x51bD1B41df79BE771884C318C37492ba46dda7b6",
    "userId": "371090333"
  }
}