{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145200",
    "entityType": "User",
    "nonce": "0x65f1d447b2fa49a0cfbe898bc598cc7c19ec6875d67a2bad8f42256d842bdeba",
    "signature": "0x04d34da067e5a7848d4f613f282704426d713605f99fadb87f7663e509187a0c3962529c916fd870a3924c8b57e29df9fd471a0d26801e4631ee838f3172dc1a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}