{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12730129",
    "entityType": "User",
    "nonce": "0x4a926d8db3d120b030eb3ecd87198b1e2ed68aa33540c9aaf53b8004099e73a4",
    "signature": "0x3f0391acb8f40ed8d99288d3e4a9968a948036e8df636467c8ae7e97b711671432086f6599f8264ca6b7abab00332afc56a9986a2a310e01208c419b0f51295e1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}