{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6bea591799937dcd3e833ed6c6cb862ca1f24af4b597b7592192bf288ef8a559",
    "signature": "0x3cfb4890c0940e5021c74b0ecc72b1ef37a7b05b85277397f0bc534bfb2f7abb02e1b1436624dbb2e969607f88a88e6ec6159a82e5e65794a3d27f540938b2181b",
    "signer": "0xA7580A84981dB6d0BEE9b129469b3BdA2311cfBE",
    "userId": "105644392"
  }
}