{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab23c497ab27f7eff345b10c56baa7d7da9519e212b487ce0d6e263718b3359b",
    "signature": "0x4778315adf15d3318a0a8c4a0bb79d715201af93f3fe24ca4e808893e71e61981d6a1f61e29ff06f0e590f6dbc1b40f0064c1e9dae9ada80753a4b2566c6e7b71c",
    "signer": "0x468AbC9afC5a4ABd5839DD8e35934E5a272704c6",
    "userId": "607182406"
  }
}