{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6883cf3aee20650721b5aaa40fee49e8dd09f3d6017665d8aa856edd4d38703c",
    "signature": "0xd73a211536e34ab3b3b790a8eac13cb7def675e4ae16b4184f4ca5bc134315870f512cce2cda45462a8b3f605162d56082da67b72e140767b5888d887dcbd0ab1b",
    "signer": "0xBB6Ab1D303cfA3cD5EBDBa3A85F8659EFf443304",
    "userId": "575673547"
  }
}