{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4e0190c420aec2bf1e3dfd3e441c68fd280bfa028e5772ce6c93342dcf29e03d",
    "signature": "0x3feea9e2b85aaac59ea0569ac051a371ac031953fad2c2f24d5c3ebd5d480c300d18ab46d9cdc0413bb5d796cf457fa09017ce1f88a6916634bf3bff9c96fbcf1b",
    "signer": "0xd6423079fb372A2e2D5663C1Ec2Ea96E0EcD936C",
    "userId": "752553873"
  }
}