{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0x8f3c0b64d4b83bf623f9cc2170ff6d74ea31a719a27e02dc13fd60d1857c85c0",
    "signature": "0x06e845fe983bf2f404245c8f7b78ce47fe91e9ae80015f9a9f54ed729b8c2bba5861f556872d548dd66aa347cb1722bb18007725defe074d65f43fc4f9a8b5991c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}