{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "625268953",
    "entityType": "User",
    "nonce": "0x5afc3ca7cf092cb154ee6ce3fa6737229b41900575b7387f3edeef2c226eff7b",
    "signature": "0x9f4836bc8c9fb1f842f0b0501e1fd4397b625d9e200be5fa081c3a908e05d65a71ee8327642177dfba8981387203d74543772019ad33b894630b1de98fb6dad41b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}