{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "537944538",
    "entityType": "User",
    "nonce": "0xe6e1c6da21546f8484f1f1c518b1b42849e73788af2e86a0d34fadeedd242802",
    "signature": "0xa6a19a330ac48571eda3c503b42b481f5df7d7e0fa754398699354ef5b7c4be9434c0950c76df35e3c6a9a410612ef2bd0e32c7f2442460b4dd11c4b61c315011b",
    "signer": "0x6fb79570A836Ea8554ad1D745C12769B22f1e4E3",
    "userId": "283478"
  }
}