{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6266c37d5893347ff11d60dfb1acacdc2964f225690b3855dc1b346926dfae76",
    "signature": "0x03a8073c62f193558dc05a7cc7c4b1351c3d3bf0b7a963d172183d4ec490f7d361de95cefff62206b3ade5276eb0c263a7871f9250043f6f590a3deec11d61221b",
    "signer": "0x21B42f41d4316520eC38eA1776cba1328574aF01",
    "userId": "69573253"
  }
}