{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x63e3afbf43196aeeb736b130689e2a26b4f2237f40d999fe57cc55de54c8e7f7",
    "signature": "0x072dc992edfcc27c7c5350483987148708df9d4d01aeaddb469abd64209487ff0878cf0abe82c905e7c912a992a340c0e5b41c1f17983c4098aefc02c1bf26d11c",
    "signer": "0xf30CF3448b693D98101Be93bdFA1A863ad8023fB",
    "userId": "435421579"
  }
}