{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57768",
    "entityType": "User",
    "nonce": "0x7caf59dbe97a781ec87926ae03f662f2f60475e8b5b6f40f3ceed4ff0bf989b6",
    "signature": "0xa3762c3c1ddfb7769b4b225eb92b38127cd2d50a1cdc5a197b12921cc284077d10e770b3b8ac6119d9c3e400ec8d199688952236f94318e039599a1f6035d4f81c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}