{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d4b114fa8e8307a95a213ece24a0a1d561e6638e5d4d3db4fcbd82666e67d39",
    "signature": "0xc8a7dbd5d7970d5f0b9310a326e266967e95c15d9ab3c2f5290b103e2ef439dc1b3a37f5f3b079f3c96319fd3373138fb654d78f28669915a2f370f2550f59431c",
    "signer": "0x46Cbc1d3C3Db1519602Ebe1F826990FAE2689E86",
    "userId": "17532"
  }
}