{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x4d7b2ce782fd13782faeddc9e3e0b78cd508416ef900e81bebd4225367e21753",
    "signature": "0x368c870bd8e2848f47effd4f50f393f6ed894d0e0968f28f6f250f3ddfcb31780ec8dd703b622f1a3d4dccc22f35e18b3de6abaf82200c51f67228f1b25ce2201b",
    "signer": "0x920c2f1256C66a42B0740694058F59A398EfD71C",
    "userId": "655200401"
  }
}