{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x39afa31d6a73840fab53db29836d6e245221ba746dcbc88f700e95acf3dea1ab",
    "signature": "0xf679f1a578a4dad142e9bfd84adeeff24f20c154be177d4b7529991312c23a60168bc524e72d7d0108a410c6cab3961bd578147009b7a7db452d23aa209f6d161c",
    "signer": "0xEC8b66252F8C4387beB60Bf8700DfFB53f28d877",
    "userId": "391278306"
  }
}