{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x40818a4a64ed832fc36bb3862ad9313849942d34c5b489ba7611b78cf61dd2ed",
    "signature": "0x613aa54326b980be04aa138b2434655d37ae6dcc278790047886af7eb611455575dc5b2c7c4aac6ab3a64d252389875e5ec49d34b9eb57f57b05993eae5f07021c",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}