{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144313",
    "entityType": "User",
    "nonce": "0x349929869c2e2718a66ec4e71dcc76664ae3d12ff9efe88bb842abc72770e7dd",
    "signature": "0x8541e1c8c98f023b48f868f09f08392e9976087dc8a50e0e3a5e35417a49615c73d9fad29c301271a3cf9e2b1665ba80a86d7da03ded9c0270e06ddb4c8412b31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}