{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "284786",
    "entityType": "User",
    "nonce": "0x99eb4286a13ab9619f9eef0ad1dcff3a0b036e02cb5363209f6421edddccf016",
    "signature": "0xdc8d4b819246c291814c499f66ead2c6777919334f584563a515c9ecdc951fc81b4d7ca12d5fabeaf8687c917559d94a7659bdaf548e0369b675e2d97a927c491c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}