{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "357225773",
    "entityType": "User",
    "nonce": "0x1804f3325e3672e47be64060de3952d1c753a701fa9645abc6a9d00dc5df5b83",
    "signature": "0x5689ef76d9ab55c568a7f62be8cfd95cb68c963c067dc26e516d2550df03262b372988e278e9d1d3349a8733ab5c8719916f6c2e6a62e471f6b2e886927397b31c",
    "signer": "0x138B6ac6EcE2bea5eAb147DBdDe9E1a09717a3b3",
    "userId": "736985209"
  }
}