{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351697",
    "entityType": "User",
    "nonce": "0x18cc1ab182fa79e08f4e2c5d74b49384453e14fb5a213a25f5e8fefdc0040f73",
    "signature": "0xb5a8b2aec45041ff5b9a6ec92f77e02597f451080da017eb9e3e29e57c4732bf162cd90c3f3f8eb4ef7926d0ecf10e685c6f7cc8e1c002434f68ede25e3274671b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}