{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "485987672",
    "entityType": "User",
    "nonce": "0x11c5a12ce3f5efe807e1098e9bcba2fc18fef52812ba8971c183839f41221c2a",
    "signature": "0xc769d7aaa066f0e04c1dd86d9526f77bd92867863223415428a549d9c97057aa3179b9ca8374305ffa5903e3f7dae5c76e4cdaa46537b8bf244ebd40d52fac161b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}