{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe43ebf6580bcbb8adc0d23b0f1ddfc1f07389fbfe424129949a793fda6b6cd07",
    "signature": "0xede75b37f11eb79bf4aad146a938e371425e70bf6c6bc756d13bc84bfa96736576a0b6c2645043fcd1b27b90ed735a2a7d6cab42edf05aee84b492faeb846c4c1c",
    "signer": "0x3Bd457e538dB375E28EC36CD7Ed874E541Ebb79A",
    "userId": "378597658"
  }
}