{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355193119",
    "entityType": "User",
    "nonce": "0x40f601e3445b7d9f8caa2d4d3fab6ff948990ef28b81b3c1c64d5d487296b9ad",
    "signature": "0x6e41e5682247969c9d0c9c1d4c9c8558ec553563d432238118809e57d6b6bb47506b4e89c18a1f260b5896f68c419bb8b83ef0b994d9ac2b7503e9411c0099951c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}