{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75439",
    "entityType": "User",
    "nonce": "0x056ef0f0e9dd3bcf2a31cfec4a12e525c14d97954b75c3a391ecbe6057a61fd6",
    "signature": "0x6134cea0171aa6fbdf36f5fbe4f3ee179c107963551466f84b76cb3106cdebcf24ff73b8bce2e4fc12db23c3a640f503c744a30b28439b4e3991b52bcb4800371b",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}