{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf028238a761085d5e137d3d665cb1bea76a3e13e36fc54f01e08780f7b89236b",
    "signature": "0x2e582e471bd57381a7825d30e14b7141bd54708c4c322f1cfdd726fb94719752163ad95c4d5260a81b63014e425e5f5b6bb807c928f5e323583ac5db93c2ec451c",
    "signer": "0xEF11C1F7894D0278999f55E434AF53a9c51533c9",
    "userId": "506951677"
  }
}