{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd904541d24c910e099717ee23c3b6b2b903c6f9403d022b93e3d5a29a7a11bc2",
    "signature": "0xa499377a7aae11a0215975f09a70bf85277c1d520092fa47ea9a70a380a06eb37270c362ac01dcf7ce5d239db0e7c0122647c19eb1210a31ff8da12b93204fea1b",
    "signer": "0xdD03ED106abBEF4982159500e32B8602B985a69B",
    "userId": "444965341"
  }
}