{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "612014",
    "entityType": "User",
    "nonce": "0xd6c2949842d01a66c253f025733aa89e589b077ea8090f612a87b40e51b33ca5",
    "signature": "0x948b704fb007e3fea19abad13be88699acd18d2ff79cd65f57517d3e19ade8a97701f41e1ae84ce0874f0572ccbb9457dd3ea266c648b27ad26c498ddb5d9cd41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}