{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189",
    "entityType": "User",
    "nonce": "0xa61aa4edd51c4e5ba48d6b010745b20981ffa2b3050ab2430653e052173553fc",
    "signature": "0x64ee819cd38ce0c217b4b328316f969a3ee257129a715438fa33a0b8c9b38cf605f174b0becc5a2b75bc00c967409ab775e48ca706a1aaed33c6a8f3160929d71c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}