{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac898b30572658aab30b26f9fa973ba7470fa8e8e502bdb7b6aa512ec1daf83e",
    "signature": "0xdb8178d78b0aede949f61f0330d8b9d49008994d1758d02875122d61bec4d6b96a169325e68e5c555d0c8a19c1e9ea38ebc0dacfefb0506b2e0c82ac3b835a571c",
    "signer": "0x589e1843086493ae188e1DC7BEcf2594E8eB12f7",
    "userId": "245271410"
  }
}