{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171007",
    "entityType": "User",
    "nonce": "0xb8b741daafa2fc56ad0e6efdfcc550b2483adea0b4c64c18f1edc29e3b198465",
    "signature": "0xba4c640e2f42287d3f4bba34864ab779d533f547bd530461087354635353c04d050646895f9df2b2eb32f63b7cfcc6ca119fb2daa78e82dfa9227cc184d8e8e01c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}