{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x954aa48deadb0e69228fe0768396d2039803ba33e4369117366b419c1bc0370e",
    "signature": "0xca545db3e87c79791547d3bb883e99714a2e80331c5c7842e31ac335b5c307af6e59f50add6333b23c829db4af23e239a97d259754ffcb11296e8a354d2540cf1b",
    "signer": "0x363801E3FA842957f7b59D108F8Cf2A0F0989Bc1",
    "userId": "66921139"
  }
}