{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8771f83159bee612a47f4c2349663b9d81abdc0dc3b932e7112159b644d682b5",
    "signature": "0x2694294108b219e5675689251ff3f5825515f6e4ca4ce0f14ca7096580587ab107e6085627897611a54c9149e235c91c5862cc6d5b84feb857d42d402a3dcc541c",
    "signer": "0xBB00208e99a2bdf716AB90e9F3C2928A7E512c5d",
    "userId": "738363750"
  }
}