{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x505c74f1c2d3cdc3b6f6983d2313bd7b6244fa78c72b4f88414ba6992fdb57e2",
    "signature": "0xf7be7dfbc4adcad663649338e9bbff737d06846aa848d8dac30e1cd87175d8797cb7d21fb9832f170b0689a79f835fa92515548bcdd3a516159b77ce7c5288c71c",
    "signer": "0xA6750a3CE8C84a6d249dFb455863F0fBbd7aAa79",
    "userId": "295621001"
  }
}