{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994013869",
    "entityType": "User",
    "nonce": "0x4474a79687220033bbf7433e97fc63a266f69ebf8f6fe1e6e74b96849b37d83b",
    "signature": "0xd58e520cbd93861a5f63f365d03555b0949588c8c9a3d32a5fee198451689bf24fa76e611ef0da2986bd22db435aa7612d2e94105cb998c0b86357bce95062751c",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}