{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144",
    "entityType": "User",
    "nonce": "0x2c38e11c6296dfcb252700e3d8c7b976262c12a9bfc647f4c9586c2f7d985ba1",
    "signature": "0x4fc20fe3d9749fe59e97f608ca3b721f07deaa2e14fe75d9e5fafaeba59afdbf43f9fc6330d52d0b2d709e078367126c38ca414247943e2d34ce76fc3da525571b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}