{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420867",
    "entityType": "User",
    "nonce": "0xdf50e1d51477ebd03ee2e02dd540baa30c5c5d7637fb49ccd1f3ec34bf81f725",
    "signature": "0x90751a1391f209d09424cc67afa4e8cea34e4422f2efbbfaf395f7d30c56336e5aee37814a2b957ed00f79e93fd3702f3d0057310621b41609d308beac2beed21b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}