{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe1651603a7d56f02ef4c344a9457046342c91b1e79930d246bb1d7c693e39a51",
    "signature": "0xbd293545bd64c237042c902544a229142856a7063fa39d4230a6fd65d2fc7d69099069694ad8e933484d3a0c42c40fe646de2abb27cd49b08675e8d64e9e24631b",
    "signer": "0x62D2dABf16b82faD4CB0B2ac5f87f58d287B1fca",
    "userId": "640216975"
  }
}