{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf6651482dd6971e71a1b6c971df236df431a89926dd0221fa70319950b41a9ed",
    "signature": "0xdd852c4f9830af7d4f795704a854c8b7192fa996d04997f30f3b4439ddc9214c0034fbd4013e2a5b973bcfbd99057e8b56f1b25ef1287df69a675a07f1a6dc6c1b",
    "signer": "0xcfdE53E4231eEeE5b14bf2D49FD6f39B1D76E322",
    "userId": "339348617"
  }
}