{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78123",
    "entityType": "User",
    "nonce": "0x74fd5b6f749b7df1c0530f1d60bd51fa885029cc0af7bc3a5b4ee25294ed41b1",
    "signature": "0xd89160904ad7023f4cd891c6ff29a05d39a18a2718d516615ce94992e88e45fd20974477ca037c899eb29c74b97470a45981305fcf2216440cd029e1714ab3511c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}