{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xccd9fc2b54db21fadc26688b25725dc4073530dd9b6c4a1448967413f4dc6f40",
    "signature": "0x30b4edec60cdfceee1106db5abedadbf9dd5517cfc874327d3e67d6e9749c4f15ec044217a4658864dfe045b62f258ae4347386cc55da4ee2fa887d8626316a21c",
    "signer": "0x68ee0736D725277C93d4197500Eddd8e9f06dAE1",
    "userId": "216091592"
  }
}