{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142974",
    "entityType": "User",
    "nonce": "0x10ebc6d3820844673931979ab964ae78d1c42cdd3a24decb7281c427fa3f3920",
    "signature": "0xafd8402fb2d7629d325d415fe199529ecd811d754df531501d71777c6b5ba2e6566500082228165f49c2aa167dac92f4abb7e85de41ed58f68129b8ae82146161c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}