{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f253b7b37c5ddca91c58b7941d648beec704f6a544749c91c9e4f9a4dec6440",
    "signature": "0xca4817e3fe5e4d4c00adc8fad37f3230b86b9628a2ee37664ab6e690b7b68b586d80ca06ee13f0b78ec9b352b0356a59fb3ab24571b012c22d021436685e51611b",
    "signer": "0x4845197E3d84cab882E02366dE4741C091E21623",
    "userId": "806235853"
  }
}