{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308578797",
    "entityType": "User",
    "nonce": "0xe6f70f24c6e09dd5f00aaa4a06d99470812ea18c781ff5ed24f394089a6c5b5d",
    "signature": "0xe5bde4921fc369f0df1e5f1a29b218572101eae2976764a4cf26492d68ae50517fb4934191bcf22f491a3aa04cd652ce5b34c30baed5818e8af3830c605727f61b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}