{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "534459102",
    "entityType": "User",
    "nonce": "0x5cdd92e6cffc4f2d5a3374d4b868086f94c2827a370ca404e836384a26b07cec",
    "signature": "0x16bed448c3e0fc31c4378ad587b9f40df2352c85cde6703486990da0042df5cd1ba91b164c40d3766c7a0b9fade225b9420ace110b5a33f3cfde3bb13915886b1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}