{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf434ae5536e83b2bee1b2b4847ccf375345c15b32d4921144a27a6490c9c8c4a",
    "signature": "0xe99fdc25b4ef564c3b47d18990c4d211c1efb554b9f5119af565f3da2281c27654e7dbdb7d6e795b4a34c1db4c849b9f7e1751310e07b953d6d9fd0d3e3b09891b",
    "signer": "0xf9EfF93c5EA70Ae54c23B231CAe1762e8D454300",
    "userId": "135504182"
  }
}