{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x6ce9299ada5979fa241f1d8e6fb40943109821fab10c67085920e70459dd5357",
    "signature": "0x61b77bcdfb404f65ffeedc7be745b4a09141bf9821410d4f7822ad48c6cebc606912613e11290177b9d8b2a6260af59c23542c5f22211c21d5e6b7ca371f016f1b",
    "signer": "0x45C3C3C84b1FBC3f9ecD57BB3e43dE4044d3Ea3E",
    "userId": "975596375"
  }
}