{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2e5ce5853e98b6ff1a946814c0b21fb534e3065e2e9bcd9a436d2614c51fa8c5",
    "signature": "0xc0a27269c5d0cfcfa528a4c0a62e4e87c5e8e2942f132f82fa78855361275a570252353377ec7cecd3d5a862b186d1f0b6bb818f38bb296763c1917c4bb6e4271c",
    "signer": "0x8Bd6bff4F6E7A0563fEa1235f254F88728CD3704",
    "userId": "307166514"
  }
}