{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13701",
    "entityType": "User",
    "nonce": "0xb85f9e047072e36b214abfe90b06a3253c1cd2cce029b4dd763fe4f323f25e8a",
    "signature": "0x6621a09371f58948730274d6dbc43756c581551ddaec91f57f76e65b27bd7f8d486c2d6182a944b49df50a3ef1c803d8c8d1ae32baf43cb325d83132f4de19c01c",
    "signer": "0x57B72EB07de2F234F10e779f1Ba99344cEa3B3A6",
    "userId": "873528115"
  }
}