{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x47a757909aae33e7de983942a7e2e1851ec8b2d64ac99f49be77d3876d694b23",
    "signature": "0xb7b28b789fa22f403bac936be7089a771ffb21127748572cda6f21e798d5c3bd20f91f942dc6d1e9057be3af8d4576e2b4298a744484d3e2df27a0d19f76ad241b",
    "signer": "0x83A2898fB51Cde052267945741f071bB38E84E73",
    "userId": "480081204"
  }
}