{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139975954",
    "entityType": "User",
    "nonce": "0x743fb172667b97337f7183451c34eb9413201e9b209fd91ca815f1ce92e527cf",
    "signature": "0xc4de2e21628c068d3c4bccca15eb7b76a9ca2700202ce561060bc36d7f9c434606cd61cc591fa3fe90ad4b62261856358d3ae6203093eb45da2179450d4bb83b1b",
    "signer": "0xE020146C7aCDba5DC9524606CE182F8A3c1BAF36",
    "userId": "294330"
  }
}