{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x717007af7bfda29c818e2e13fb31c64b775b54cd4ff1f16645731ee5c46399e5",
    "signature": "0x567ca5330a16c67c436dc6f105c9138dc06713e4078df0abd01c82777e18b14150bceb21b90ff4ab34f6ce42626c042425af5de9b68058f2cbfff86e57dade211b",
    "signer": "0x5643DA6C36cb4e0D3b1cBd1e78312deaFfc3894f",
    "userId": "970316950"
  }
}