{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351240",
    "entityType": "User",
    "nonce": "0x7c9773257123d244a38b143db3bbf881b25599b424402dea282b8519755e300b",
    "signature": "0x9fb09e3739748dfc0e8f2a8ffc3972332fac4efd516b2bb3ed45443d6512aa19569a17e57942633afdf9ec8d853e1cca1d2a53dc65f518c5cb3ddf614595cb0f1b",
    "signer": "0x46ECf83B77C4b8bEa00d024616B7522C53096eb0",
    "userId": "654574340"
  }
}