{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5be66404d57e8474f2690be30d3ddc405cea1afcc4ab5b358f6b62e61850eb95",
    "signature": "0x487fa1cfdca62f8fedfe9a265dcc6f977efbaf1f647cf6f04dc5ab0d91afb50777aa3d530462dac8e36a0bf9baea0f0625868616f45718555256e7935e292c7d1b",
    "signer": "0xeBA0b38CbD16cc25a7FBD3b5961464734762bA05",
    "userId": "557236540"
  }
}