{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108988",
    "entityType": "User",
    "nonce": "0x6b907346eba685eb9b436cf0eda54d8679a8c069152266223f529888608960b3",
    "signature": "0xcecfe4c06c761664372402bbe573a638ad994e677f8c2d96f0769a9352add470387beadc9af22d188c03e884124a4ab9dc37fcc03c375ce10ffd6aa41ad78ec11b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}