{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755516",
    "entityType": "User",
    "nonce": "0x333289ca5b7f9da6583745b152ecb120bb6d6cc2b1b3000a9f2c2c0b6c8ff716",
    "signature": "0x93ac57921ea0c55b8b26678388e5d4720a693bdd694e2c10eb2bb3ac00a0805e738c6dcf877d70f48c34fbed7ee96b22e9153f0e0f561e5c5d22c69ab6a7168e1b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}