{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43309",
    "entityType": "User",
    "nonce": "0xb1b328f9d500a0cf735724ad421db966e36830c84671e223fcde9727394e8313",
    "signature": "0x630aa5b93bb9edba5d21bf136e40357844cf4c54a02c682a116d954c6dff57ed18c68c89494f163d106a2ac99dc0186e86a989a39945cb406c10bca14df59a311b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}