{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x25863bd7fc4f157a9fcd2ae2d9eb6da655181540dc86b7232611939aa65308d1",
    "signature": "0x1f98eaa9d0a83a4b811a69be11f36bd5d4c83e498ef7f11bce9c9d7f4885c619750095de97b8aa155d095630ec727b8008facb1905729b0f00dff411c9a0dae31b",
    "signer": "0x3887Ba427ff35Faa1f4a6feA693a23E3A368B71d",
    "userId": "74862939"
  }
}