{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990398",
    "entityType": "User",
    "nonce": "0x282a3d218bb61fcf8e352a78114ae1a15e0a826f1dcc09df7cb4cae3f3dd7710",
    "signature": "0x74a0960484b9c5ff3b43fb1065de8bd117cdc143d96ea580c7b16fa8380232f541d9c2f6fb4cd4b006a5d2e5c9eb5c8802bbc3b7823a6a4c7a4bc1e854ba65411c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}