{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "38838",
    "entityType": "User",
    "nonce": "0x538fe7ef543755b8b240e11b47a5c2f4eb419022c1feac0b128db9649d994f0f",
    "signature": "0xeefc72ac640a733d207162820f88a02a691a1f527b5939757d88172db4f592de48f4580a2661ded4405276317f99c1e58dee4be3290e925fda5bce1ecddf527f1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}