{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "384548",
    "entityType": "User",
    "nonce": "0xca540fd140bce806bd3e2d818f0f7589f45005cd865a52331e9853d9fb65e2d0",
    "signature": "0xc5f28547d4103e6b8c14073dd316b9a48ef45b0e9f91a9ea33926460c8f1be1052a585c60c70712cfa1f478d4802cb4ea739573272bd11027c5799138f8f4a831c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}