{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751664",
    "entityType": "User",
    "nonce": "0xb174a6614d122c06b094416f281ef66ee2dcc74ebf7ca8d4d3b10c109aac9710",
    "signature": "0x097ddb2f2137056daca397bdc18454aff588ee7b769337b62a1b62ed1c89d97548215d0d9690f826f0bd2883c925186a786e47922c8308b98fa98fc37c8bc8871c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}