{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "168710",
    "entityType": "User",
    "nonce": "0x76ffedc453c09f47b825d016d27b45e4b45d4551a39e2e87266eca49b0c278db",
    "signature": "0xb17d5fb9bbf4995a0764ea778fd5006ec0cc3c7fbc3e16b8727bd21b5b3ee67363595bbe05fb63ea66b073d3b805977b715ebdadaad11cb5fd27292d508068321c",
    "signer": "0xE4EF593fb5D21ecF6B00BbBB006Eb9725F5F7a5A",
    "userId": "852971520"
  }
}