{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50198",
    "entityType": "User",
    "nonce": "0xce09f2b6714399ded4c0926da38a961f42794d4b147d0100b6755f3b39ee218e",
    "signature": "0x515ef5662eba681806673b1422c8bd6097d48d1818a15ef5b174ef3cfcd7759d0a713f0280f853d3503dfa84d794546eacfe6796083bfcd58b5e52189bc021551b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}