{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x7e16239a990e0f4c774871fbaa3b5d4e8881fba8f8a72ffdb951915db2d440ed",
    "signature": "0x0aab36933ee5a7f9b7b74c2be7272c7f9ffaca4bb0ebf2584aba718e3ae0723b17c31bc791a2371408adf00b73f237eef8f4c5a3b92f3e81a2ec6294e324517e1b",
    "signer": "0xD4075518293370C8887D8dd80B16bc683A59D633",
    "userId": "743640235"
  }
}