{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618242981",
    "entityType": "User",
    "nonce": "0xbf4f2c1458509d157f1a80f2f4a7743bdafbfc8e47f33a615b0ed5d951fcf917",
    "signature": "0xcb94c4b5063a803c26736e27f69017e00b249b17d37b433dc0e3d7b52d20d5930832b9145c91c1cbe86b209da5aeab8f7711d6dd3c874c41e4afebbfbb1bd98b1c",
    "signer": "0x720537125Aa4b451266209E0d508D7576a4bAF94",
    "userId": "942771296"
  }
}