{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1889186",
    "entityType": "User",
    "nonce": "0x12c5a65632f7fd48d1b766b662b97b0e1fb8af65097a9991db67ebe33f98e98f",
    "signature": "0xb8aeb2dc02da0f5117e403a9f80b86efa4c00f4382c0acd1c522d7ab98a0e269335bb3ec9d60f70d6117ab371710771832a5032252cc451cc096d91cd3a7cd8b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}