{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348435",
    "entityType": "User",
    "nonce": "0xcf5fdb9efd155279afea3287329caaf8399a9b89d244a84faeb0d52ab12a6c23",
    "signature": "0x74f267943a5a0eb355d12510791d6ee513f5df05c6c75d3232f8fb08c9f1ee7520fe6c9f30418f381cd22228449a18b602f14b08b89be3ac2d0ea14c06a8cdf51c",
    "signer": "0x7f912C1FB1a1A19A9A986d4D5D7C1a681775EDc9",
    "userId": "780289904"
  }
}