{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2c007ea3a8cb551f7034a6a65acdc786e44ce32957b9d1c5dc3c60aaf714205a",
    "signature": "0x019cf465da0e14b41d7c6884e0409d2e78282ed8af6d99bdaa0491d630c39aa4471e0de73ab92982304c6a2d75ca465f2772abd5a76de0a5fd8567d5cb9f828d1c",
    "signer": "0xc381438f5Dfd2C197eCc12cec71d4484646573E2",
    "userId": "98972725"
  }
}