{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "743925647",
    "entityType": "User",
    "nonce": "0xc0789c667baf3cfbddfb9bb908183f75a04f6bf094c3ca711e4a39c7e260ac3b",
    "signature": "0xa246aef3068f3b52b4669f1d0db53a05d72ccef3ac3127e5a18abd8cfc327d83084948ac43be2350f343eb7dfa6a2ee81ab6b0d142e8a2006288f56be31725c41c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}