{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d96cc47518976e58ebb4d4f414691cfe8fba21f852b459274ddcad3e25944d6",
    "signature": "0xe70be7664afaf0034ee2fbf18830d933e110c8468c48211f060a6d457e6175bb39e581ebb0f748900c8f678123ff50a84acb2723f12e11f3cb699293600e693d1b",
    "signer": "0x867974fBD12c8FBcde06698baC610f0A7ca404Ea",
    "userId": "390409168"
  }
}