{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb4eb2d486da20b257f8bf05e2deb7207bde066579c97ad0d2a269a1e2b582c4",
    "signature": "0x5374196649a08068e10af4416d213bf2a231689a1719d09d21156eecc7eddfb50d820646bda21efe2a5d1c6103ed2fdeebd31722cd905fb770f9986c008137531b",
    "signer": "0x6F819108589ecE3670C60db82Eea0c66C3038B8E",
    "userId": "532924430"
  }
}