{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a219f5975f884b1e11537c6e80ccfa409606ec402c62e409137669740426fc2",
    "signature": "0x4f417eca9bed3fd367004636738f6b4df895311fe5a3d7ed797505625ad8c89e35b29d06869099b184a36a5b6ef5543d6e9dc8ffe758d9e486802e13521e12611c",
    "signer": "0xa92ae5B1E69cC0016dF96916eE7B91E1b820EAc1",
    "userId": "956724930"
  }
}