{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "757194",
    "entityType": "User",
    "nonce": "0x343d14ba278406524888943cad03432ec59ecf8a36df3876080cc84774fa5d8e",
    "signature": "0x0bfd834faffd69b40b4a6693a811b8560f204b124dea9a8faeb11aebb6ec7e965cc054ff53d4a55155f0d9e88a15f960e3a8f89e403cd8e768fcf3c471a084091c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}