{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x04ea20e849f0de000b53683bb092a720097b1b3ebc9106fe5cb34f042a99cce3",
    "signature": "0x63e970aaf8e9b525e29b2665f31e71fcdb073c32b821925c65480ca802ab787914fddeebb4e71507ac23da7519d8447cb8e4627cd6c61496f1c22d7182fbc0b41c",
    "signer": "0x5a675F549eA704d45E5539B089D754F3c7ce8aE0",
    "userId": "980027500"
  }
}