{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55b9a407bd6ca8ad28fb51c02a1dfe90cff4ddb5c4ac431d5b47d9aa31c7f77f",
    "signature": "0xe03c1b2596799238da796816c9c9a36895245429cc5042c0dfc2fd036b65a7d749fab43cc4df3351a99dec83140374fd47354d47c1b0ad0b6ee031b6146d5b431c",
    "signer": "0xCEADf69D707d025460a3d27226683bCCC04DBA60",
    "userId": "187910835"
  }
}