{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdc2fbcd1d7a238f1e81db06fcde82db5b058c3c1957f1020235e587908092fbc",
    "signature": "0x436db00fd4cec3a3445acd7c5110f80c4d31cd9a05d326ade4fb27d6836144014df46ee8514a5f214a4d952451ef97fe75ff4023cfd7106822be6043950620341c",
    "signer": "0xb23F7ACBa14520B7919f1C18a87b3d90246cD0c4",
    "userId": "136902762"
  }
}