{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2c11f50a9f0a5bb0e1773e01d088bb76ed288c0e0cd3ee9a144b9aab00821fb",
    "signature": "0x3d93fd805246e2eaaaf32cd4b12ca16d0c05fa9dbfb7125653fb0f80899dd30c69f9476448c858d22d35bcf662978c8747a19f4783fc318d5b8929c74602f9501c",
    "signer": "0xb0d555a3bd382070FBB305CF4C389A6F7b3B0544",
    "userId": "518752535"
  }
}