{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d865b8ef0d44745636d2fd86776ef1ef0c1803114f35a7afd34c20e8b14359d",
    "signature": "0x8d41e4a083aa947910ef84edb63ee37a73c3485469cc8313ee76817bc0c5807e44dd3950ff052c1fa1de1bdb09524fda3f2ac34a2c7ee6f78e533bb4a68b799e1b",
    "signer": "0xa6Ef6c60F45b6De4fceCddbF897d2a87F70802f3",
    "userId": "363745917"
  }
}