{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681866568",
    "entityType": "User",
    "nonce": "0x856f1c743ac88f93a04ecfe099d83c7fc98e33ed4b20a971b21b2e6358093181",
    "signature": "0x2b36240e186a2e8e44d1419819ed275a63e8c7c2a5cae4c25fd2a1697495fd727f0ddda9e6ee585b06c673df4eea7de76bfa985c550ede4ad45798f9ca4b9dd31c",
    "signer": "0x3CE307cb27B2Fc2b03Eae311050CA4e8C34Fa57d",
    "userId": "50936"
  }
}