{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x273971a5546506a78404cdaa79381f71299778762a5bf97d38f70a1867157bf2",
    "signature": "0x2bf51a480ad14840d43f76ad5197067cd2c062360f8b806ed9cdb04ae820f71010a093f26b24a0dcab2aa106debbb26eb068cd5dadab12a70493b2191daa10a01b",
    "signer": "0xd8a65dC2d71D6caDA0ef13A84908F90052c425DA",
    "userId": "837557269"
  }
}