{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "14200",
    "entityType": "User",
    "nonce": "0x8cd662a9e30443ee982ac5f3215e7709325619639505217c39e004d823247291",
    "signature": "0xfdf51897be05c8b945bb7c981a5da7bb811710d658cc7dc58208bddeef452cb52bdbf5e4a5c91e8def203bf4e8c842cc5817d42c58c48d119e1b281e868550c81c",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}