{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "478221489",
    "entityType": "User",
    "nonce": "0x10d6d294a2729a84103aec792abce85bb4ba320be146c417bc3a0baa557194c2",
    "signature": "0x550e6bf449e9beabbd155ef31f1650be94400d374ac5da59a4380b71a8dd98e92cee95830ace98d81ee88538dbb3a9c545c8c6d530a91af5e2b5d464129a638d1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}