{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446939",
    "entityType": "User",
    "nonce": "0x0002c536f1b0156b15235d72743486ba7ec586d08698ed5d4866eb8b2b74cb36",
    "signature": "0xd936725e2f5fc24719a6c76a783762b5cfab29e3dfc4e5bdcbd7784b8552e0212a4abe709edd869949204c3dc5342824e3c050cbb5ad6eee9034c0313453c1a01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}