{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157408",
    "entityType": "User",
    "nonce": "0x0ee0ced2ec92c329a0f9f1afa7ebd6a4d19f2c14985133687bd29a42d5fdbb85",
    "signature": "0x260a7006615439c51365acc649b743e942b7a1b32fe7681e8d20566905e4caee3f2fac2832c3d602da03193a3f1b2eeb5650785d2aeb3a4ac2950fa8cd46b38a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}