{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdbdad9f703b81e80919abf21930f7371f962ea08fa87ba4324241dd49c509b40",
    "signature": "0x9cc07e1e6dea61f777e08482b0037b37da620f5b63115931c84b7fe52591ee2240b6f6325450d86d5596b0f02a604d2c506c6edbcac2c37e6902e440a67b5f101b",
    "signer": "0x353eDF8e08Ac9dBD056D7FB76Eba4FEF59652d9B",
    "userId": "209207132"
  }
}