{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330409911",
    "entityType": "User",
    "nonce": "0xc0a5f4219be65a44727f71ec51e3d072f0fc7619875b8ccfabe7ebc689b8c049",
    "signature": "0x0313129d8bebc539c97521d22464cba391c0a715c03749ae5313c7c3e008e3164b15296919326f72714ea2dd5894ea5b88e443cb4acb86f41008350b963394661c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}