{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf88582c5f91af2ea1f8e786171947503e1189803fda5814f764342168f531424",
    "signature": "0xd4cb7d65d845b16a323ff1477d3a6abeb355bc99f4e7073c04bed68d8c0ad8211ff7edf2094d4c4241a9b7ef6449d7075a38fe5de7d0a56b481f1cf8101b96bf1c",
    "signer": "0x04c12B1E907C93Bc156ef0786b3A7f71b36527E9",
    "userId": "139700372"
  }
}