{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138734",
    "entityType": "User",
    "nonce": "0xf21d449bb6eb796f8b7a6329ae507cbcb9f86640916c18244691a0a58e5635ed",
    "signature": "0x9166688f1a6e427caea70e1f36910bbec4ba787c509de7e509f3bb473a13035565666ca17a8ef9eca0cb6d3fb0ce0aba2c5cc21fee233bb4da8c7d5d27ddb26e1c",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}