{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10668",
    "entityType": "User",
    "nonce": "0x699c26d104eb214dab1cb0ec5fcb91edede5226865e62acb094163390dfa3a50",
    "signature": "0x6df0f2236c8214ff53a6b22679eca91438465eee62fd66509273c203e186a151091b896074b9ed0653fe3ddbc40fe238f33f14439a345d0456436a46a91e08421b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}