{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187397058",
    "entityType": "User",
    "nonce": "0xf90b8b42c72cc3a27775ee5728ca887a7a6f2c3d44130ed9bc338361dd452fc2",
    "signature": "0x708990706ea9f5067f178b567f80cbd271c421774a38317e2aad17c8f521460a637a7c70fbb673d643b615b19dff3d2e2c1223475bae73011ea5b3e9283d24cd1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}