{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53648",
    "entityType": "User",
    "nonce": "0x34d488bc2f7726a810dd508c920ed2337c1a2274efa95fcd5fa1f14c8c399357",
    "signature": "0xc373aedad56f6e8e1ac81471fc0ad186be2c69c3e604ae568e2be00251cceda570b49b95965a12cca203f9c2df223e149a5e5c7b54d24ab44605977bef4144f11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}