{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137120",
    "entityType": "User",
    "nonce": "0x2bc1ac2dc0e17a9872fe67f8afd416b94d5b0a84100282c317932000ac2c24f6",
    "signature": "0xf6482144030159f98e8b706eb563c013318589a4596ee198d69e116a38b651f97176dd05c70302ccfdeae3fb71a2a83ea509fcd303c4e8461b28c31971f65f2e1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}