{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753991",
    "entityType": "User",
    "nonce": "0x3a2aa81ba8fdcb0dd1c2a386b3e218088b3fe93b7f912118835f899399245664",
    "signature": "0x9f51925caaaea70d5a246e3e554b67f1013bf1c570a18be66530091f8917bbfb2b49942bd334dd5f35db137fbcca5961b5883fec854692c3aec65a8651a3e33d1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}