{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18734001",
    "entityType": "User",
    "nonce": "0x98631b196673e849f3f94aacf46b75763246c39880b61aafaaf6f984d8b9301a",
    "signature": "0xd5b1abff4cd1bfea2812d067b86bf7ad2bc52c64638ec18a0915cb2ebd6b58f336236b77f4cd87e88089ba725daaf5857600d8539883d863e0da2002df91cff41c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}