{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x239bac6469ffe920be479dc93b81b890e98355f2815358f734d9f4fc88063c3e",
    "signature": "0x222e158c1813b9f83840c6c0506def2d63806d6b6e220c7b8ebde5a74d9abb8011f99f5b7ac2077756bac2a9778660963d8e19c5a67529cb5688d7b373ec76df1b",
    "signer": "0x48c943B273D3e38E9AD42B75681E0A6A29173aFd",
    "userId": "337210858"
  }
}