{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd9e873ad9f493a4ba40cc65414e76811294ed833e52e0cdd1a419b8473abfccb",
    "signature": "0x26f9f4bd1d14c41c58acab6d9d3b19387bbb9e631d7fec00ed063e25a5578fe457213cc1f854167c97d1a90a6836819a433f389662a6af67519b521544ca2d1f1c",
    "signer": "0xfE1e0B3a8d60e473e21512a6062536BF67b5ff9F",
    "userId": "534888474"
  }
}