{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0a23db581cd3147945a6bef45af44c3a3be4fc65edd1263493ee7591137dbc8",
    "signature": "0xd578b14d50144ed8cc82f7e30d836788c4f0172edc2560a25db648362b32321872ba8514af0c749a9a69d8458981317221943ba4d8d6a36daee0057de23ec06d1b",
    "signer": "0x399f60970750028d6AEE8Cd89FB22768d383B3F2",
    "userId": "128114836"
  }
}