{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xba447f199aa4c62c1da1f429cd0a09bc8db83fd2f932227cccf89a4fb8075d6b",
    "signature": "0x53f45c44d19d91ce9c156be4d8ce3eea89f670c05d7baf36aeb6207945650dcb329fde9c6d1cc1941e7bbe34bbfa3340ad4dc8327b0dabc2640d5cde59fa22b11c",
    "signer": "0x064d8308821c11a0220d5c702Fd7989440C0D481",
    "userId": "712286004"
  }
}