{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7431",
    "entityType": "User",
    "nonce": "0x11d76f13df94a24baf86a5797b31940edd845ce531461cee0506ccf5ebc86c4a",
    "signature": "0xa5c3a719e27bdf4f9f7acfc9a324b509f2b62a92a76d1985c0263983fd4983fc1fffc1843387e1f5522bce2ce43c9360c57ab57a91c1cb880d9992b3a24d20bd1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}