{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "963075181",
    "entityType": "User",
    "nonce": "0x688a245e0047e7d886031ab53522fcf6c24ea15a6e129c758e338c7de8d1c90d",
    "signature": "0xfbd3afef4e81117ad9e99856d16fb0a1f32092170183c57c1a980b8c3a0a18c753d096e6c4c965de0b62861f76a65a46817f74529d92b462e205d597732529d81b",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}