{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13672",
    "entityType": "User",
    "nonce": "0x0de70bfa3288bff2d73d62aec9ebb7e0bcfa67f389acde5865f1ebcfe3d06416",
    "signature": "0xc07ebe109c4d9c9ede70e2fa0c9e75989da3379a2f429e5aa152e45511cffb460a1728b6247241ab0197b214d6e10c259913a41a2d307a173024e55c7a84efb81b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}