{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511280302",
    "entityType": "User",
    "nonce": "0x11ed6cc8cdb88ab651dd9d513796ce5e744c9305c232c9fdc8ccfec267c76dc3",
    "signature": "0x0f1220d7d7606d2c9a3d82638b1fddb1bd9a9d7df9c89e4a49fbc4e32936bad8274cb3f9e82e1d82a26f90ede18f9c90e54bad7c14fedbc0add3df442867cf591c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}