{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xef115ad78a7c91e82c56c8c0808ad14f7b17775da8683392c411a0d8743f1310",
    "signature": "0xdf324698923f9c6068f673b4374e0f47e6cf520b296bda0611077fab24f9ad714ccec564327582248a6eb5f42e4b0fb2ef87f59e03934aa0308a50b001a7d0c01b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}