{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210352",
    "entityType": "User",
    "nonce": "0x4193ba713541728d5d6676b88e8c2539a4e93acec3b87744270acb8ebb38c491",
    "signature": "0x125997ff24e6cbc0ead188b6a66d61480bf66374f22eb123a06c3c5cdfcd02170e4801d17f6da5ff2ba726b3d0adfff598d3a991c9429616376fe2f0c07ef96d1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}