{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390365",
    "entityType": "User",
    "nonce": "0x63c55c0b93127880cc007ca4298819386686633fdfcfe3753d108cf6356a3614",
    "signature": "0x6abeb3d3eec134e2e1eedfd7dd8a03ad5413e39eaac115ee21df3f645b5597e07359354aeba4b7dbb1484641c6159c9e8018f97eda06884ebb359e61ca391eb11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}