{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x072cca2fb6c207dbbfa83d32297c15219bc60826638c669d2c24e6b6550ed4a2",
    "signature": "0x7be0ddb516c289de1b5d0ad57b6bdb576f735342c317038e919f60780694382365602e9069fa52a15db9e72302de9f7d98b30a30a4c73f98a56905aa390087f51c",
    "signer": "0x5a81BccDd6D352c2ee8F60f6C731E4125465471f",
    "userId": "606900134"
  }
}