{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x24408c738f2a0ec30d1eca2c69c13c4d1c5a2644e062e9ec3d9ecd2a40cdd22d",
    "signature": "0xcb0c944df3387fa74eb6a31d4e2e59358d562d492f89e7d771d47d09e63ba2af3eefae3bc2540438d2e716628e013444327e9e7228870c6014f527d11a71f29a1c",
    "signer": "0xc880f9A1e95D9A1D14A2F5b4c4Ab461F24e18400",
    "userId": "634015825"
  }
}