{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x905f9553e84bff145cff30e590896e5fe554291f81fd8a1af865074d7faf38ff",
    "signature": "0x15949810cb9ee1dfb36ab7583118f4cececf37f5fe69103a6d6bd34d2d2b9057097296bf490216ecd7dbcb99b0c6328520d62c17bc9421f1b4911ad2aea6dcec1c",
    "signer": "0x8317323fD0A6c29Bb4C8c82d00D4D47520Aa4672",
    "userId": "526404300"
  }
}