{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "575845728",
    "entityType": "User",
    "nonce": "0x90980c24d835b900a0c37ec9d47e7cc73589b9cf81a765326a221af07bb36795",
    "signature": "0x610c85efd5c12d94f861a5e9de862cf3ae42b728b996ab9f153d5d66524704e203ddf4b86291d59078f721568688958c27ce267fcd225e5cf81c90eae2ef34a21c",
    "signer": "0xd9d4cF91e1f5AA6f2F8599662a7c9b5896FB2a2C",
    "userId": "289632107"
  }
}