{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaea0cd2fd78ef498bff4a51bc1a8645fbd916ad5325dffa1dc4c08142e92c036",
    "signature": "0x4782e3e65e56708df238cb7042c1a96284db769dcca150281bb2f75ee4890c946c53eb30b8ad7d411e319b7c6904706857985bb89ee62626205381ddabbe1a5f1b",
    "signer": "0x2424efcD7950080Da91D90E9D9543f7AA74e140F",
    "userId": "404381908"
  }
}