{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1321701",
    "entityType": "User",
    "nonce": "0x0b7cc9f431e3fe1e4967288aff2b284b095413825456aaa18055171481496cc7",
    "signature": "0x07028585be680500ebff0cb7847f08ae94ac010634e6b522c19cf9d6c3369b034c89494e073c5240894fe1fc57d69dcc52f1fb5952759a84f7c7031820de77591c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}