{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145842",
    "entityType": "User",
    "nonce": "0x349f97e3ad98983c2e7e9d66fcd119aa74afec6d3258c4d54fd3c8bb20dafd2a",
    "signature": "0x8d4f664c4cfdc58c5bc21fcf3e4815f4ebaf84f62659866951efd2cf6bf1559306d7abf9fa29c332018af1cf9776e46ca2e027c62738b072cb9b2f061bfdd0561c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}