{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x7e61443b964ed9eecf1d147abed5c0cfe6d35dc6d16d967e96e0eabd008656d4",
    "signature": "0xa77c8fed8380e5f3a69ba0f4c277458ee391bccee326fa2dc0081b8fd0a297d513b76a377f2f6d6decf3ac20ad0d613efb5d8b5a4780c724ea2d68a86370f33a1b",
    "signer": "0x81Bf0645011274410d5E45790ff7D2d89f3e2254",
    "userId": "880775312"
  }
}