{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x21719fe32f50657a91e01e20662ad0811b681120259abb41241d5f715b5b0e51",
    "signature": "0x2f6d876eb0483cb073aa60dc28d3bbbc54e3ef24c294472593fd44d8ce387e286e63ca03fdee62ec6a5db157a161632f09c99abbb73cbc1ac0a287d8efc4ac7f1b",
    "signer": "0xbFD30ab550690D0820B278e17a616BBe38a2C27d",
    "userId": "437119900"
  }
}