{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x07408527f9e1fcb5caa26b7937c7c15dc9c5a7425850b313c95bafbaf9f9c00b",
    "signature": "0xcab67b3451a769fa2ab94554ed8b43a74b95d58832063c83b0109b659766380a0f365083e87d9ed6324da79ddae479e33f6d37e00ec975ca3f748f24835d6f101c",
    "signer": "0x5E7423d87395641C871314CA5efA9A3c5A5fb3d1",
    "userId": "823504182"
  }
}