{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121452",
    "entityType": "User",
    "nonce": "0xe02efd027ee1550e0e339d193bd5f7ee1ca22223f3b7eee5c99f427562779997",
    "signature": "0x53f3fee1db988c543d2d1ce579f218f6f3837f3d9621f2c666f6720312a021f11cadfd88af863c83ad388e36a3f79620e28291e05bd18fbbed5fba7eed68845b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}