{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0xd0765bd640cdb16936a7cddf610dbfcc9d54145e93510e79b7e8656cc982d1fe",
    "signature": "0xa13eb66c1e2508b2a92aca696c1c69718c089c6b7e965d801250c31925f5c0e4533cf23df387e32f0e52d49d12e7b483725b139efd12d89ea3f4cebfe641fd631b",
    "signer": "0x3CE307cb27B2Fc2b03Eae311050CA4e8C34Fa57d",
    "userId": "50936"
  }
}